问题 选择题

Mary clapped her hand over her mouth _______ she realized what she had said.

A.while

B.as soon as

C.suddenly

D.then

答案

B。

根据语境可推知。如下面一题也选as soon as:

_______ he became rich he cast aside all his old friends who gave him some help.

A. While                                                 B. As soon as

C. Suddenly                                             D. Then

选择题
单项选择题 A1/A2型题