问题补充:
It was funny that when Mary began to weep sadly.
A. praising
B. praised
C. to praise
D. having praised
答案:
A. praising
B. praised
C. to praise
D. having praised
解析:考查状语从句的省略式,当主从句主语一致的时候,可以省略从句的主语和be动词,when praised=when Mary was praised,句意:很滑稽当玛丽被表扬的时候开始难过的哭泣。选B。