A.switched | B.have switched | C.switch | D.had switched |
A.was kept | B.were kept |
C.has been kept | D.have been kept |
A.is well paid | B.are well paid | C.is paying well | D.are paying well |
A.is taking | B.have taken | C.take | D.takes |
A.arose from; increased | B.resulting from; has increased |
C.arising from; increased | D.resulted from; has increased |
A.has learned | B.would have learned |
C.learned | D.had learned |
© 2017-2019 超级试练试题库,All Rights Reserved.