Choose the best answer for the following sentence: I find the diversity of life ___________ Earth overwhelming. Choose the best answer for the following sentence: _____________ money for her further study, she spent all her summer holiday to do a part-time job. Choose the best answer for the following sentence: You ____________ better be careful not to miss the train. Choose the best answer for the following sentence: Hai: ''How often do you go __________ a picnic?'' Khuong: ''Once a month''   Choose the best answer for the following sentence: The secretary has been busy ___________ all the afternoon. Choose the best answer for the following sentence: We ___________ dinner at home on Saturdays. Choose the best answer for the following sentence: It was _____________ I expected. Choose the best answer for the following sentence: I’m not having much success ___________ communicating with him at the moment. Choose the best answer for the following sentence: There must be __________ trust between friends. Choose the best answer for the following sentence: Millions of years ago, changes in the Earth’s climate caused animal and plant life to _____________.   Choose the best answer for the following sentence: The engineer ___________ that we could move to our new flat in two months.   Choose the best answer for the following sentence: The air-hostess tells the passengers to ____________ their seat belt. Choose the best answer for the following sentence: You'll __________ yourself a lot of time if you take the car.   Choose the best answer for the following sentence: I suggest we ____________ outside the cinema tomorrow at 8:30.   Choose the best answer for the following sentence: Some people depend only ___________ music to relax. They do not enjoy any other kinds of recreation except music. Choose the best answer for the following sentence: Despite ______________, they did not cancel their departure.   Choose the best answer for the following sentence: My aunt is a ____________ teacher. Choose the best answer for the following sentence: Reading books takes times away __________ watching films or playing games. Choose the best answer for the following sentence: If you want to save money for your trip to Ha Long, you must _________ the entertaining you do. Choose the best answer for the following sentence: I have never _________ any experience of living in the country. Choose the best answer for the following sentence: We've _____________ of time to catch the train so there's no need to rush. Choose the best answer for the following sentence: In her autobiography she occasionally refers ___________ her unhappy schooldays.   Choose the best answer for the following sentence: He didn’t get good mark ____________ he worked very hard. Choose the best answer for the following sentence: Be careful with ___________ computer games. You may not control yourself.   Choose the best answer for the following sentence: Nha: "Shall we go out this afternoon?" Tung: "Sorry, I can’t. I am too busy __________ my final test on Math this Friday” Choose the best answer for the following sentence: Our flight was delayed, ___________ meant we had to wait for hours at the airport. Choose the best answer for the following sentence: The train will be leaving in five minutes so you __________ hurry up. Choose the best answer for the following sentence: Mr Smith was ____________ in a road accident.   Choose the best answer for the following sentence: The thief broke in to her house because she forgot ______________ the front door. Choose the best answer for the following sentence: Although the pianist was playing a very attractive melody he showed no ______________.   Choose the best answer for the following sentence: Hanoi is located ____________ in heart of ____________ Red Delta.   Choose the best answer for the following sentence: The region is rich ____________ minerals and coal deposits.   Choose the best answer for the following sentence: A network of computers allows personal computer to ___________ with people and other computers. Choose the best answer for the following sentence: I have the greatest respect for his idear ______________ I do not agree with him. Choose the best answer for the following sentence: Years have gone _____________but I never forget the melodies that my grand-mother sang to lure me to sleep.   Choose the best answer for the following sentence: I ____________ when I heard my name _____________ Choose the best answer for the following sentence: ____________ of folk music are often unknown. Choose the best answer for the following sentence: Lien: “This year we have very good crops” Mui: “Yes, the best ___________ crops I've ever had” Choose the best answer for the following sentence: Tuan: “Would you like to go out for a snack?” Thu: “______________ ” Choose the best answer for the following sentence: Our country needs is a long-term policy for investment in science and ____________.