单项选择题

(By the time) Neil Armstrong and Edwin Aldrin, Jr. walked on the Moon (in July 1969), there (will have) been many (space) expeditions.

A．By the time
B．in July 1969
C．will have
D．space
<上一题 目录 下一题>
热门 试题

单项选择题
It (is) essential (that) every boy and every girl (has) the same educational (opportunities).
A．is
B．that
C．has
D．opportunities
单项选择题
Not until ______ his shoes did he enter one of the low -ceilinged rooms of the Japanese house.
A．did he remove
B．he had removed
C．had he removed
D．he removed
相关试题