In the past twenty years great changes _______in China.
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A
were taken place
B
have been taken place
C
have taken place
D
were happened
推荐题目
 The doctor insisted that I _________ more fruit and vegetables.
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A
took
B
had taken
C
would take
D
take
 The hotel wasn't particularly good,but I ________ in many worse hotels.
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A
was staying
B
stayed
C
would stay
D
had stayed
I can guess you were in a hurry. You _____________ your sweater inside out .
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A
had worn
B
are wearing
C
were having on
D
were dressing