A.is happened | B.has happened |
C.happening | D.to have happened |
A.is to fall | B.will fall | C.is going to fall | D.is falling |
A.is to | B.is going to | C.is about | D.will |
A.不填; has | B.has; had | C.has; was | D.was; had |
A.go | B.goes | C.had gone | D.has gone |
A.I’ve spoken | B.Ishall speak | C.I’ll speak | D.I speak |
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