摘要： You will have to wait for another two days the librarian gets every book numbered.A. before B. when C. as D. until
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________ you have a large vocabulary, you will find it easy to read.
- A.Once
- B.Before
- C.Unless
- D.Even though
You will be required to _________ Mrs．Smith in preparing a report．
- A.assist
- B.help
- C.offer
- D.afford