they (both can) swim across the river,（）中为啥需填both can?有嘉奖oh（）中为啥需填 both can而不填can bothboth不是需要放在情态动词后吗?

the two girls （）well.A.both can swimB.can swim both.c.can both swim They can swim 对划线提问 swim they can swim 改为疑问句 THEY CAN SWIM VERY FAST. can't,they,well,swim(.) they can't swim( ) .(good) they (both can) swim across the river,（）中为啥需填both can?有嘉奖oh（）中为啥需填 both can而不填can bothboth不是需要放在情态动词后吗? My father can swim.My mother can swim,too.用both合成一句 My father can swim.My mother can swim,too.怎样用both将两句合成一句 can they swim?做否定回答 ----Can they ___(swim)?-----No,they_____(sing). they can (swim)对括号里提问 连词组句.can,they,swim,not(.) They can swim well.（变成反意问句）They can swim well,____ ____? Can they help the kids with ____________?Yes,they can.A.swim B.to swim C.swimming D.the swim They ___swim across the river.A can both B both can C are both D both are 填补问句 ————?Yes,they can swim. Yes.they can really swim.根据答句写问句