45% of the tickets( ) sold till nowA.were B.was C.have been D.has been

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45% of the tickets( ) sold till nowA.were B.was C.have been D.has been

45% of the tickets( ) sold till nowA.were B.was C.have been D.has been
45% of the tickets( ) sold till now
A.were B.was C.have been D.has been

45% of the tickets( ) sold till nowA.were B.was C.have been D.has been
为你解答.
45% of the tickets (C.have been) sold till now.
到目前为止,百分之45的票已经被售出.
解释:时间状语till now说明时态是现在完成时,主语45%的票是复数,要用have.

C
tickets 是复数,根据句意用现在完成时的被动语态。
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