【即学即练】用just,already,yet填空:
(1)They’ve________seenthefilmtwice.It’swonderful.
(2)Davidhas________comebackfromNewYork.
(3)Mum,I’ve_________finishedmyhomework.CanIplayfootball?
(4)They’ve__________heardthenews.Now,they’retalkingaboutit.
(5)XiaoMinghasn’treturned__________.Hismotherisangry.
(6)Havethestudentsfoundthelostdog_______?
(7)Noonefromotherplanetshassentusamessage________.