How old is she? I don't know. She ... be 18.

He's not answering. He ...

I'm not sure she ... do this on her own.

... I open the window?

He says he's got promoted. It ... be true!

You ... tell your parents that we are going abroad.

I'm sure she won't crop up. We ... as well go home now.

... you help me? I've got some problems with my homework.

In this situation you ... find another job.

You ... listen to music after 10 p.m.

You ... take his words so seriously.

You ... do it on your own. We'll help you.

Every time I ... deal something important, my boss is very kind to me.

You ... do this right now.

You ... turn down their help. They are friends of yours.