You should make a careful plan ___ the experiment.A．before to doB．before doingC．

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You should make a careful plan ___ the experiment.

A．before to do

B．before doing

C．after to do

D．after doing

答案

解析

略

举一反三

There’s no point __ to persuade him to do anything.

A．to try

B．in trying

C．of trying

D．if you try

题型：不详难度：| 查看答案

The United States signed up on Friday for the 2010 Shanghai World Expo, _________ it the last major country to join the event．

A．making

B．made

C．to make

D．having made

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So many natural disasters are believed___________over the recent years because of the frequent unreasonable mankind activities.

A．to have come about	B．to come about
C．coming about	D．to be coming about

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---Fans nowadays seem to be interested in the entertainment news___________the private lives of pop stars.
---That’s it. I can’t agree more.

A．concerning

B．concerned

C．involved by

D．being involved in

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John did quite well in his exams , how little he studied .

A．consider

B．considering

C．considered

D．to consider

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