While _____ in the room, we were all very excited. A．waited B．waitingC．to wait D

题型：不详难度：来源：

While _____ in the room, we were all very excited.

A．waited

B．waiting

C．to wait

D．wait

答案

解析

略

举一反三

The man went into the room, _____ rather strange.

A．to look

B．looking

C．looked

D．and looking

题型：不详难度：| 查看答案

But later people developed a way of printing, _____rocks.

A．used

B．using

C．and use

D．uses

题型：不详难度：| 查看答案

It"s quite strange that the man sleeps with his mouth____ and his eyes _____.

A．closed; open

B．closed; opened

C．closing; open

D．closing; opening

题型：不详难度：| 查看答案

With his son _____, the old man felt unhappy.

A．to disappoint

B．to be disappointed

C．disappointing

D．being disappointed

题型：不详难度：| 查看答案

26. Their work ______, all the experts went out for relaxation.

A．to complete

B．completing

C．completed

D．had been completed

题型：不详难度：| 查看答案