单句改错。1.Doing(A)morningexercises(B)are(C)goodfor(D)ourhe...
问题详情：单句改错。1.Doing(A)morningexercises(B)are(C)goodfor(D)ourhealth.________2.Theteachersaidthat(A)lighttravelled(B)much(C)faster(D)thansound.________3.Thelanguage(A)speaks(B)in(C)theUnitedStates...