---Your classroom report is so wonderful.
---I wrote for 3 hours ___________ I finished it.
A. when B. if C. before D. after
The flight to Toronto was __________ because of the heavy snow.
A. put off B. put away C. put up D. put down
The digital camera is so great. I’ve never seen a better one before, but the price of it is ______ in the store.
A. higher B. the most expensive C. the highest D. more expensive
---You are great! Congratulations on winning the first prize!
---Thank you! Mr. Yu You__________ me to practice again and again every day.
A. enjoyed B. complained C. encouraged . D. celebrated
If you are careful enough, you will _________ make mistakes in your exams.
A. mainly B. seldom C. usually D. probably
---Do you know why Anna hasn’t come to school today?
---I’m not sure. She _______ be ill.
A. can B. should C. must D. may
