找出下列单词的中文意思。
你想知道小朋友们正在做什么,你可以问老师:A.Where are they? B.What are they doing?
你放学回到家里,感觉饿了,你会对妈妈说:A.I'm thirsty,Mum. B.I'm hungry,Mum.
They're ________ football.A.plays B.play C.playing
They are ________ a dragon boat.A.row B.rowing C.rows
There are lots of people ________ the lake.A.in B.under C.on