—What are those?-- are baseballs.
this key is your mother’s.
You don’t know ______ I want to see you again. It’s a year since I last saw you.
---Where’s Li Hua?---Look! He _______ tennis on the playground.
With the help of the new technology, you __ e-mail your friends by mobile phone.
--Haven’t I told you that the computer needs______?---Sorry,I forgot_______it fixed.I’ll send it for repairs right away.