A.It" s repaired | B.It has been repaired |
C.It"s being repaired | D.It had been repaired |
A.phones | B.has phoned | C.has been phoning | D.phoned |
A.see | B.had seen | C.saw | D.have seen |
A.is | B.are | C.will be | D.were |
A.is broadcast | B.is being broadcast |
C.has been broadcast | D.had been broadcast |
A.have polluted | B.is being polluted | C.has been polluted | D.have been polluted |
© 2017-2019 超级试练试题库,All Rights Reserved.