题目内容

14. ____ it is raining, you’d better take a taxi.

A. Before
B. As
C. Till
D. After

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13. I said nothing about it ____ his wife was there.

A. in case
B. so that
C. because
D. unless

12. He found it increasingly difficult to read, ____ his eyesight was beginning to fail.

A. and
B. for
C. but
D. or

11. ____ you’ve got a chance, you might as well make full use of it.

A. Now that
B. After
C. Although
D. As soon as

10. Only recently_________possible to separate the components of fragrant substances and to determine their chemical composition.

A. it becomes
B. having become
C. has it become
D. which becomes