A.had happened | B.had been happened | C.has happened | D.has been happened |
A.didn’t; be | B.didn’t; was |
C.doesn’t; should be | D.didn’t; would be |
A.was working | B.will be working | C.will work | D.has worked |
A.they had expected | B.expected | C.to be expected | D.expecting |
A.haven"t see | B.didn"t see | C.hadn"t seen | D.don"t see |
A.are encouraged | B.have encouraged |
C.are encouraging | D.had been encouraged |
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