1.Fatherpromised_____IstudiedharderhewouldtakemetoBeijingnextsummer.为什么是thatif,不能是if2.Ithasnotbeendecidedyet___thenmeetingwillstartatthehall.when,可不可以是whether3.Egyptisacountrywhichisfamous

　　1.Fatherpromised_____IstudiedharderhewouldtakemetoBeijingnextsummer.

　　为什么是thatif,不能是if

　　2.Ithasnotbeendecidedyet___thenmeetingwillstartatthehall.

　　when,可不可以是whether

　　3.Egyptisacountrywhichisfamousforitspyramids.

　　其中的which可不可以改为that

　　4.Weinsistedthathe____seriouslyillandthatadoctor___foratonce.

　　Ashouldbe；shouldbesentBwas；besent

　　Cwere；shouldbesentDwas；mustbesent

　　为什么不能选D.

　　5.Thetwinslook___alike.Theyare___afraidofthedog.

　　Amuch；muchBvery；very

　　Cmuch；veryDvery；much

　　为什么不选Cmuch和very在这里用法有什么不同?

　　6.Bruceisa___goodplayer,butJohnisa___badone.

　　Afairly;ratherBfairly;fairly

　　Crather;ratherDrather;fairly

　　两者什么差别~

　　7.（1）Inthisjobapplication,theyaskwhetherIammarried.

　　(2)WhetherIammarriedornotisnoneoftheirbusiness.

　　为什么第二句要加ornot.可以不加吗?什么时候要加ornot