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[单选题]

_______ necessary for us to have plenty of exercises every day.

A.That is

B.It is

C.There is

D.This is

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更多“_______ necessary for us to ha…”相关的问题

第1题

载波频率为fo，调制信号的最高频率为fm，两者的关系为()。

A.fo=fm

B.fm＞＞fo

C.fo＞＞fm

D.fm＞fo

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第2题

They will _______ the project with the necessary funds.

A.refer

B.relate

C.furnace

D.furnish

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第3题

balancing accuracy－based with fluency－based practices is not necessary in speaking teaching. （)

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第4题

It is necessary that he _____ sent there at once.

A.should be

B.shall be

C.will be

D.is

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第5题

Something that is scarce is: （)

A.scared

B.insufficient

C.deficient

D.necessary

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第6题

Because the company was doing more business, it was necessary to （) the factory.

A.extend

B.increase

C.rise

D.add

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第7题

It was necessary that we ___ everything ready ahead of time.

A.make

B.made

C.had made

D.have made

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第8题

It may be necessary to stop ______ in the learning process and go back to the difficult points in the lessons.

A.at case

B.at length

C.at intervals

D.at a distance

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第9题

It is necessary that （） before 10 clock.

A.she returns home

B.for her to return home

C.she return home

D.she will return home

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第10题

“Red tape ” means ().

A.a red cassette

B.the rigid unnecessary official rules and regulations

C.the necessary of official rules and regulations

D.a red string

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第11题

It is necessary that students ________ more exercises to do.

A.have

B.can have

C.must have

D.will have

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