4、_.I'msorryfornottellingyouthatwehavechangedtheplan.A.mustn’tB.can'tC.maynotD.needn't9.--Itnearlytookmeanhourtowalkhere.--Haveadrink,then.You______bethirsty.A.shouldB.canC.willD.must10.- Where is Jack, please? - He ______ be in the reading room. A. can B
5、. need C. would D. must11.—Canyouplaywithayo-yo,Jim?—Yes,I___________.It’seasy.A.must B.can C.need D.may12.—CanyouspeakJapanese?—No,I______.A.mustn'tB.can'tC.needn'tD.maynot13.—Whatdidtheheadteachersayatthemeeting?—Hesaid,"We _