單項(xiàng)選擇題

How long have you worked here?（）

A.Since about two years.
B.I do not know.
C.For about two years.
D.Who knows.

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How long（）you（）the library book? For three days.

A.have; borrowed
B.have; kept
C.did; borrow
D.were; kept

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How is your mother these days? Oh,（）

A.She is good
B.She is not very well
C.Never mind
D.That's all right