A.was staying | B.stayed | C.would stay | D.had stayed |
A.could buy | B.should buy | C.must have bought | D.could have bought |
A.had been expecting | B.has expected | C.expected | D.has been expecting |
A.has been caused | B.had been caused |
C.will be caused | D.will have been caused |
A.think; is going | B.thought; was going |
C.have thought; is going | D.had thought; had gone |
A.have come back | B.will come back |
C.will have come back | D.will be coming back |
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