Keys _______ opening the lock in the door.A．used forB．are usedC．are used toD．are

题型：不详难度：来源：

Keys _______ opening the lock in the door.

A．used for

B．are used

C．are used to

D．are used for

答案

解析

试题分析：to到，向，表示动作的对象，目的等；for为了，表示动作的目的，原因等；句意：钥匙是用来开门上的锁的。结合语境可知本句主语是动作对象，故用被动语态，本句中介词表示动作的目的和原因，故选D.

举一反三

He made a mistake, but then he took action to change the situation ________ it got worse.

A．until

B．when

C．before

D．because

题型：不详难度：| 查看答案

The radio says that a terrible traffic accident happened sometime ________ 8 a.m. ________ 10 a.m. this morning.

A．between; and

B．from; to

C．between; to

D．from; and

题型：不详难度：| 查看答案

--_________ do you improve your listening?
--I improve my listening ________watching English movies.

A．What , by

B．How , by

C．What , with

D．How , with

题型：不详难度：| 查看答案

The song reminded me________ an experience I once had.

A．to

B．for

C．at

D．of

题型：不详难度：| 查看答案

The music is great because you can sing along _________.

A．to

B．for it

C．with

D．with it

题型：不详难度：| 查看答案