简介:Ⅰ.选择填空(15分)21.MrandMrsSmithtookataxitotheairportto_theirson_.A.see;offB.send;awayC.show;outD.send;for22.Hedidn'tworkouttheproblem_Iexplainedhowto.A.exceptB.untilC.whenD.once23.-Theyusedtobegoodfriendsbutnowtheyarelikestrangers.-How_this_?A.was;comeaboutB.did;comeaboutC.was;takenplaceD.does;happen
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