Hello, may I speak to Mr Green , please?—Sorry. He ________ a meeting. Can you call him later?

How many monkeys are there in the zoo?— ______.

This TV play is very interesting．Why _________ down and watch it?

Are you happy ________ your English study?—Yes, I think so.[ ]

Was it from Mary, _______ was working at a department store, ______ you learned the news?