I hope we can fly to _________ moon one day.
I’ m sure I can make myself _____, because I have improved my English greatly.A. understand B. understanding C. Understood
The river has become much ______ than before because of the waste water.A. dirty B. dirtier C. Dirtiest
----Do you know how the accident _______?----Sorry, I don’t know.A. come outB. come into beingC. come about
-----I wish I _____ go into space some day.----- I hope your dream _____ true.A. could , will comeB. can , cameC. can , will come
_____ my father ______ my mother take good care of me. I love them so much.A. Either; or B. Both; and C. Neither; nor