对划线部分提问((画括号的是对···提问)
TheYoungPioneersarehelpingtheoldman(对theoldman提问)
Thestudentsarepreparingfortheexam.(Thestuents提问)
Hermotherwascookingwhenshecamein.(cooking)
Thegirlsandteboysweresingingunderthetree.(underthetree)