The scientist suggested ____ the experiment in a different way. A．doB．to doC．doi

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The scientist suggested ____ the experiment in a different way.

A．do

B．to do

C．doing

D．done

答案

解析

略

举一反三

--Do you often hear John ___ in his room? --Yes. Listen! Now we can hear him ___ in his room.

A．sing; to sing

B．singing; singing

C．sing; singing

D．to sing; singing

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The headmaster’s words are quite _____.

A．encouraged

B．encouragement

C．encouraging

D．encourage

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Why not ____?

A．let him to go home	B．to let him go home
C．let him go home	D．to let him to go home

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They were made ____ fourteen hours a day.

A．work

B．working

C．worked

D．to work

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Is it always easier ____ friends than to keep them?

A．making

B．make

C．to make

D．made

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