1.Heaskedme_____Iwouldlikeacupoftea.
A.thatB.whatC.if
2.Thestudentscouldn'thelp______whentheyheardthejoke.
A.tolaughB.laughC.laughing
3.Mrs.Sunisafriendof_______.
A.Mary'smotherB.motherofMaryC.Mary'smother's
并说下为什么要这样做.答的好,