A.took | B.had taken | C.have taken | D.should have taken |
A.have visited | B.was visiting | C.had visited | D.visited |
A.have been fried | B.are being fried |
C.have been fried | D.are frying |
A.have whitewashed | B.am whitewashing |
C.have been whitewashing | D.shall be whitewashing |
A.hadn’t done | B.haven’t done | C.didn’t do | D.wouldn’t do |
A.has been put out | B.was put out | C.had put out | D.had been put out |
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