— Have you seen Mr. Smith? — He arrived ______ you were asleep. [ ]A. si
题型：北京模拟题难度：来源：
— Have you seen Mr. Smith?
— He arrived ______ you were asleep. |
| [ ] |
A. since
B. while
C. before
D. until |
答案
| B |
举一反三
| More and more US students begin to learn Chinese at school ______ it is very difficult. |
| [ ] |
A. so
B. before
C. until
D. though |
| We will go to visit the Great Wall _______ it is fine next Sunday. |
| [ ] |
A. so
B. or
C. if
D. though |
| I don"t know ______ snooker (斯诺克台球) is popular among teenagers in your country. |
| [ ] |
A. that
B. what
C. whether
D. where |
| You should get a pair of proper ice skates ______ you skate. |
| [ ] |
A. though
B. before
C. while
D. unless |
| They went on working _______ it was very late. |
| [ ] |
A. than
B. if
C. though
D. because |
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