11.Was it in that school _______ he developed his interest in Physics?
B. from which
12.We often hear old people wishing they ________ young again.
C. had been
D. will be
13._______ he says or does won‘t make me change my mind at all.
14.Only when you have finished your homework _______ go home.
A. can you
B. would you
C. you will
D. you can
15.The ants， hardworking _______ they are， have their time for play.
16.Some states have an income tax similar to ______ of the federal government.
17.______ the examination， I would have gone to the football match last night.
A. But for
B. In spite of
C. Because of
D. Provided that
18.He had the ______ over other boys of having had very good preschool education.
19.The Atlantic Ocean is only half as big as the Pacific， ______ it is still very large.
20.It was there， the police believe， ______ she was able to activate the recorder she kept in her bag.