should never lose
can never lose
should never have lost
would never have lost
第1题：
A. chain to
B. tie at
C. be tied at
D. be chained to
第2题：
Where is my pen? I ______ it.
A. might lose
B. would have lost
C. should have lost
D. must have lost
第3题：
A、take off
B、take on
C、take out
D、take up
第4题：
A、I never did
B、I have never joined
C、I have never
D、I never
第5题：
As for food, experts suggest that______.
A. we should eat less
B. we should never eat meat
C. we should have meals with less salt and sugar
D. we should have meals without salt or sugar
第6题：
A. Never have I before read
B. Never have read I before
C. Never before have I read
D. Never had I before read
第7题：
The majority of our students ______the life of these native people.
A. have never heard of
B. has heard about
C. has never heard of
D. have never listened to
15．答案为A 大多数学生从来没有听说过这些土著人的生活。them majority of...做主语时谓语动词为复数形式，hear of...为“听说过某事”；hear about“听关于……的事”；listen to“听(音乐、讲话等)”。
第8题：
A.Never so women have
B.The women aren’t ever
C.Women who have never
D.Never have so many women
第9题：
The human can react to any situation, some of which he may never have imagined.()
第10题：
A、because
B、but
C、that
D、so