That was so serious a matter that I had no choice but _____ the police.A．called

题型：不详难度：来源：

That was so serious a matter that I had no choice but _____ the police.

A．called in

B．calling in

C．call in

D．to call in

答案

解析

略

举一反三

There"s a man at the reception desk who seems very angry and I think he means _____ trouble.

A．making

B．to make

C．to have made

D．having made

题型：不详难度：| 查看答案

After the Arab states won independence, great emphasis was laid on expanding education, with girls as well as boys _____ to go to school.

A．to be encouraged	B．been encouraged
C．encouraged	D．be encouraged

题型：不详难度：| 查看答案

_____ it or not, his discovery has created a stir in scientific circles.

A．Believe

B．To believe

C．Believing

D．Believed

题型：不详难度：| 查看答案

The pressure _____ causes Americans to be energetic, but it also puts them under a constant emotional strain (过度紧张).

A．to compete	B．competing
C．to be competed	D．having competed

题型：不详难度：| 查看答案

Although punctual himself, the professor was quite used _____ late for his lecture.

A．to have students	B．for students" being
C．for students to be	D．to students" being

题型：不详难度：| 查看答案