Great changes _______ in our country since 1990.
A.were taken placeB.took place
C.have taken placeD.have been taken place
C
考查被動語態(tài)和現(xiàn)在完成時。句意“自從1990年以來,我們國家復數(shù)了巨大的變化�!眛ake place沒有被動形式,排除A、D;since+時間點常用于現(xiàn)在完成時。故選C。
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