单项选择题

______ many times, this radio receiver is found very sensitive.

A．Being tested
B．Having been tested
C．Having tested
D．Testing
<上一题 目录 下一题>
热门 试题

单项选择题
A teacher, with his students, ______ an English film.
A．is to see
B．is seeing
C．are seeing
D．see
单项选择题
In fact, Peter would rather have left for San Francisco than ______ in New York.
A．to stay
B．stayed
C．staying
D．having stayed
相关试题