—Look ,that’s Mike,your classmate. --Yes,Let’s go and say hello to_________.

I’m expecting a pet dog for long，but mom has no time to buy _________ for me．

Sometimes parents find ______ hard to communicate with their children.

– Do you know the girl       is drawing the pictures under the tree?—Yes . She is my new classmate.

We don’t know _________. She is new here.