A.It being | B.To be | C.Being | D.Having been |
A.Being | B.To be | C.It is | D.It being |
A.students to reduce | B.students reducing |
C.students reduced | D.students being reduced |
A.of which | B.from which | C.to which | D.about which |
A.some of them playing | B.some of them are playing |
C.some of them | D.who playing |
A.to be polluted | B.from being polluted | C.polluting | D.being polluted |
© 2017-2019 超级试练试题库,All Rights Reserved.