A.went | B.must go | C.could go | D.go |
A.focus | B.focuses | C.to focus | D.focusing |
A.had flown | B.could have flown |
C.will have flown | D.has flown |
A.will watch | B.will be watching | C.will have watched | D.will been watching |
A.was | B.will be | C.had been | D.is |
A.are attached to | B.attached to |
C.attaching to | D.having attached to |
© 2017-2019 超级试练试题库,All Rights Reserved.