193. What they need at present _______ science and technology.A．isB．hasC．areD．We

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193. What they need at present _______ science and technology.

A．is

B．has

C．are

D．Were

答案

解析

略

举一反三

. A variety of courses ________ offered to enrich the students’ background knowledge of the English-speaking countries.

A．were

B．is

C．have

D．has E) /

题型：不详难度：| 查看答案

.Growing around the river ________ wild flowers of almost the same colour.

A．is

B．was

C．are

D．has been

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— The floor is too dirty.
— I know. It _______ for weeks.

A．hasn’t cleaned

B．didn’t clean

C．hasn’t been cleaned

D．wasn’t cleaned

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I wonder if he_____us, and I think if he_____us we’ll be able to complete the task ahead of time.

A．helps, helps	B．will help, helps
C．helps, will help	D．will help, will help

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I don’t like to be interrupted if I_____.

A．speak

B．will speak

C．am speaking

D．spoke

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