问题标题:
Thecomputercenter,Thecomputercenter,____lastyear,isverypopularamongthestudentsmthisschool.[]A.openB.openingC.havingopenedD.opened
问题描述:

Thecomputercenter,

Thecomputercenter,____lastyear,isverypopularamongthestudentsmthisschool.[ ]A.open

B.opening

C.havingopened

D.opened

孙亦嘉回答:
  D
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