b.whenHow soon will you come back? ____________a.in ten minutes b.after two hour c.once a week d.for two days.a.in ten minutesThe students were ____ leaflets to everyone on the street.A.giving up B.scooping out C.giving out D.coming outC.giving outLooking at the children ___ in the park , the mother smiled.A.played B.play C.to play D.playingD.playing确信吗我是英语专业研究生