-Excuse me, is there ______ book by Mo Yan?-Yes. It’s on ______ bookshelf over there.
--- Is the Changjiang River in the world? --- No, it isn’t.
Tom often tells lies, but they always make us .
David often helps Sandy ___ her Maths, he shares his school things___ her.
--- Mum, can I have something ? --- Sorry. There is in the fridge.
—If you have any trouble, be sure to call me. —__________________________.