题目内容
(请给出正确答案)
[单选题]
We have been studying German ________ we entered this school.
A.for
B.since
C.as
D.because
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A.for
B.since
C.as
D.because
A.at
B.to
C.up
D.for
A.with
B.for
C.on
D.under
A.did
B.were doing
C.had done
D.have been doing
B.government offices
C.markets
D.residence
A.store
B.secure
C.provide
D.ensure
A、must be
B、must have been
C、could be
D、should have been
– Have you visited Xian? – Yes, I()there many times.
A.go
B.have been
C.went to
A.错误
B.正确
A. make
B. have
C. avail
D. advantage
A、propose
B、proposing
C、proposed
D、been proposed