—How many computers are there in the room?—__________. Some workers moved them to another place just now.

—Is this model plane yours,Susan?--Yes,it’s mine.It’s made by_________.

---This is my good friend(朋友).---________ name is Tony.

－Mom, where’s my backpack?－You shouldn’t put your things casually, you should take good care of _____ own things. 

-- Mum, Mary bought a pet dog yesterday. Could you please buy __________ for me? -- Sure. But you must look after it yourself.