A.was busy busy | B.is busy | C.had been busy | D.will be busy |
A.was reading | B.had read | C. am reading | D.have read |
A.would be | B.would have been |
C.must be | D.must have been |
A.are coming | B.had come |
C.were coming | D.have been coming |
A.has been going | B.went | C.goes | D.has gone |
A.will do | B.do | C.am doing | D.had done |
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