单项选择题

What they have done ______ useful to the people.

A. are considered
B. is considered
C. have been considered
D. will be considered
<上一题 目录 下一题>
热门 试题

单项选择题
Knowing how to think clearly and to speak correctly ______ one confidence.
A. give
B. gives
C. given
D. giving
单项选择题
Three-fourth of the surface of the earth ______ sea.
A. was
B. are
C. were
D. is
相关试题