We’d better set off now, or it will be dark we know it.A.untilB.afterC.whenD.Bef
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19.We’d better set off now, or it will be dark__________we know it.
| A.until | B.after | C.when | D.Before |
试题答案
D
解析

19.We’d better set off now, or it will be dark__________we know it.
| A.until | B.after | C.when | D.Before |
D
解析