单项选择题

We ______ your terms carefully but ______ to say that we cannot accept them.

A．are studying; regret
B．have studied; are regretting
C．have studied; regret
D．have been studying ;have regretted
<上一题 目录 下一题>
热门 试题

单项选择题
Greater knowledge of the universe could ______ important changes in the outer space traveling.
A．take back
B．break out
C．bring about
D．keep out
单项选择题
People of one culture moving to a country of another culture may ______ their old ways.
A．keep up
B．give up
C．look back at
D．clear away
相关试题