单项选择题

(Ever since) the world (began) nations (have difficulty) in (keeping) peace with their neighbors.

A．Ever since
B．began
C．have difficulty
D．keeping
<上一题 目录 下一题>
热门 试题

单项选择题
Dr. Nolen was (honest enough) to admit (to make) errors (in) judgment (on) more than one occasion.
A．honest enough
B．to make
C．in
D．on
单项选择题
It was because the applicant was too conceited (自负的) ______ he failed in the interview.
A．that
B．so that
C．so
D．therefore
相关试题