The man will have to wait all day ________ the doctor works faster.

The man will have to wait all day ________ the doctor works faster.

A.if

B.unless

C.where

D.that

答案及解析: B

解析:

该题主要考查连词的不同含义。句意为“除非医生快点工作,不然这个男人将等一整天。”只有B项符合题意。