◆情态动词can，must与haveto的用法一、用括号内所给词的适当形式填空1.Ican't________(play)chesswithyou.Ihavetoomuchhomeworktodo.2.—Canyourparents________(speak)English?—Yes,theycan.3.Whatcanyoursister________(do)?4.Theboyworksveryhard.He________(notwatch)TVonschoolnights.5.Iusually________(go)tobedbefore10：00intheevening.二、单项填空1.—Tony,________yousingEnglishsongs?—Yes,Ican.A.canB.mayC.needD.must2.—Wouldyoulikeanotherglassofwater?...