单项选择题

As it turned out to be a problem of no importance, we()so much time look- ing into it.

A.needn't spend
B.didn't have to spend
C.oughtn't to spend
D.needn't have spent

<上一题 目录 下一题>
热门 试题

单项选择题
In the West, people make()a rule to send Christmas present to their relatives and friends.

A.this
B.that
C.it
D.the following
单项选择题
Several leaves were found()when the book()me.

A.missing; returned
B.lost; was returned
C.gone; was returned to
D.disappeared; was returned to
相关试题