真题练习

711.It's important for the figures ______ regularly.

A.to be updated
B.to have been updated
C.to update
D.to have updated

712.He told us whether ______ a picnic was still under discussion.

A.to have
B.having
C.have
D.had

答案解析

711.答案是A;考查非谓语动词。
712.答案是A;此题中whether to do sth.充当宾语从句的主语。