Hello, this is Jack. May I speak to Tom?– Sorry, he isn’t in at the moment. If he _______ back, I’ll ask him to call you back.

You mean that is a _______ broadcast, not a recording?

We’ll go to Guangzhou ________ train. [ ]

Mary couldn’t go to the cinema with us because she had to _____ her little brother.

This is __ song I’ve told you about . Isn’t it __ beautiful one?