Some of you may have finished unit one.________, you can go on to unit two. A.If you may B.If you do C If not D.If so
--- What did he say? ---- He said he ________ the sentence in his own words.
I have no doubt in my mind______ they will be glad to see me.
With the help of high technology, many new substances(物质)______in the past years.
---- Will Joe attend the party? ----- If his wife won’t go to the party,_________.
----- Can I go back home now? ----- You______ to leave until you ______ your work.