Nhanh + chi tiết 2. Man has spent years and years trying …………… weather patterns but it is still an inexact science. A. predicting B. to predict C. to predicting D. to have predicted 3. A drought occurs when a region receives consistently below average ……………… A. falling rain B. rain falling C. rainfall D. fallrain 4. When we ………… back to our home village last month, it ……………… so much. A. had come - changed B. came - had changed C. came - has changed D. had come - has changed 5. She ……………… in that town for 20 years by the time that historic earthquake A. had live - occurred B. has lived - occurred C. had lived - occur D. had lived – occurred 6. Some tents ……………… so that children and old people could sleep in. A. was set up B. were set up C. set up D. setted up 7. People in Japan ……………… how to survive in an earthquake. A. have been taught B. are taught C. were taught D. had been taught