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[单选题]

We have been studying German ________ we entered this school.

A.for

B.since

C.as

D.because

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更多“We have been studying German _…”相关的问题

第1题

In reply, we have the pleasure of informing you that an L/C has been opened amounting ____ $2,000.

A.at

B.to

C.up

D.for

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第2题

We regret to report that a consignment of silk piece goods ____ Order No. 567 has not been delivered.

A.with

B.for

C.on

D.under

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第3题

We carved their names on the stone so that younger generations could know what their foref

athers______for the nation.

A．did

B．were doing

C．had done

D．have been doing

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第4题

() in Pingyao have been preserved.

A.ancient streets

B.government offices

C.markets

D.residence

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第5题

Solar cells have been developed primarily to ____ electric power for spacecraft.

A.store

B.secure

C.provide

D.ensure

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第6题

--Have you been to New Zealand? --No,I’d like to,（）.

A.too

B.though

C.yet

D.either

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第7题

Erna Hart _______ a good swimmer; she swam across the English Channel when she was on

ly fourteen years old!

A、must be

B、must have been

C、could be

D、should have been

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第8题

– Have you visited Xian? – Yes, I()there many times.

– Have you visited Xian？ – Yes, I（)there many times.

– Have you visited Xian？ – Yes, I()there many times.

A.go

B.have been

C.went to

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第9题

You have been drinking at least ten cups.()

You have been drinking at least ten cups.（)

A.错误

B.正确

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第10题

We regret we cannot ____ ourselves of your offer of these goods because we are buying t

o better advantage elsewhere.

A. make

B. have

C. avail

D. advantage

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第11题

I have already () to Sarah.

I have already （) to Sarah.

A、propose

B、proposing

C、proposed

D、been proposed

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