A.have | B.am having | C.have had | D.had |
A.have known | B.knew | C.would know | D.had known |
A.had wiped out | B.have wiped out |
C.had been wiped out | D.have been wiped out |
A.have been | B.are | C.had been | D.Were |
A.has been reading | B.had read | C.is reading | D.Read |
A.had worked | B.has worked | C.was working | D.had been working |
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