they are waiting for you at the library怎么改疑问句you为划线部分

they are waiting for their Mum划在they下面 Did you konw__at the bus stop?选项A.who are they waiting for B.whom they are waiting for C.whom they were waiting for They are waiting for the train?的英文翻译 they ,for ,bus ,the,waiting,are,a 连词成句 （they are） waiting for the bus.画线部分提问 they,who,are,for,waiting ) 连词成句 They are waiting for their MUm.（提问） they are waiting for you为什么加ing They are waiting for Mary 用who对Mary提问. They are waiting for mary.用who对mary提问 They are waiting for their father _____(have) supper. They are waiting for you at the library是什么意思 They are waiting for a friend .改成一般将来时态 Do you know ______ at the bus stop?whom they are waiting for B．who they are waiting C． whom are they waiting for D．who are they waiting They are waiting for the bus?划线部分为：waiting kor the 对划线部分提问 they are --- a bus now A waiting for B waiting选哪个啊 We are waiting for They are waiting for the train at the station 谓语是不是 are waiting for表语是不是　waiting for 有时候表语是不是包含在谓语里面?