单项选择题

Although customers keep complaining about their poor service, they've made no ______ to make any improvement.

A．action '
B．trial
C．attempt
D．progress
<上一题 目录 下一题>
热门 试题

单项选择题
The boy tiptoed out of the mom and heaed for the swimming pool with out his father's ______.
A．conviction
B．command
C．consent
D．compromise
单项选择题
He kept his head at that critical moment; otherwise the accident ______.
A．would happen
B．happened
C．would have been happened
D．would have happened
相关试题