A.stop... by falling | B.keep...falling |
C.protect...falling | D.prevent...from falling |
A.used to, used to | B.used to, am used to |
C.am used to, used to | D.am used to, am used to |
A.take off | B.put off | C.come up with | D.catch up with |
A.is, are | B.am, are | C.are, is | D.is, is |
A.bring | B.take | C.spell | D.play |
© 2017-2019 超级试练试题库,All Rights Reserved.