1 ---Would you mind giving your advice on how to improve our learning efficiency ?
---If you make _______ most of forty-five minutes’ classes day after day, there will be _______ switch in grades.
A. 不填; 不填 B. the; a C. 不填; a D. the; 不填
2.The dance performed by the disabled actors is really a hit, but years ago no one _______ they were to achieve such great success.
A. must have imagined B. could have imagined
C. should have imagined D. would have imagined
3. Each of us is likely to develop a personal _______ for certain types of entertainment.
A. comparison B. possession C. preference D. advantage
4. --Was it two months ago ____ you luckily got an opportunity to spend your holiday in Canada?
--- ______,John was the lucky dog .
A.when ,Not I B.when ,Not really C .that ,Not at all