用括号里的正确形式填空和句型转换(用musthavebeen/done或can'thavebeen/done改写句子）用括号里的正确形式填空：1.Look!Thatman______(wave)toyou.Doyouknowhim?2.Thechildrenwereplayinginthegarden.They__

　　用括号里的正确形式填空和句型转换(用musthavebeen/done或can'thavebeen/done改写句子）

　　用括号里的正确形式填空：

　　1.Look!Thatman______(wave)toyou.Doyouknowhim?

　　2.Thechildrenwereplayinginthegarden.They________(must,finish)theirhomework.

　　3.Youmust____(live)hereforalongtime.Yes,Ihavelivedherefortwenteyyears.

　　4.leaseshowmeyour____(dive)licence.

　　5.Wehavenotime.You_____（have)betterhurryup.

　　6.Theteacherwantsyou______(go)toherofficeanonce.

　　7.Whatarethose?Theymust______(be)thepenshe_______(buy)yesterday.

　　8.Wemakeupourminds_____(go)tothecountryforourholiday.

　　9.Wemay_______(travel)byair.

　　10.Whatwashedoing?Hemay______(read)abookinthegarden.

　　句型转换(用musthavebeen/done或can'thavebeen/done改写句子）：

　　1.Ithinkyourgrandmotherwassleeping.

　　2.Idon'tbelieveyouwereathomelastnight.

　　3.Ithinkshewasanactress.

　　4.Idon'tbelieveyouwereillyesterday.

　　5.Idon'tthinkitsnowedlastnight.