"Where does your father work?" the teacher asked me.

'Why do you collect waste paper?' I asked Mai.

How did you go to the airport last week?, his friend asked Nam

What time will the manager come back tomorrow?, the customer asked.

How long will you stay in England?, Tom asked Nam.

How many students are there in this class now?, asked the man.

I left home at this time 2 weeks ago, said Tom.

The boys said, "We have to try our best to win the match."

Where has he been?, she doesn't know.

Water boils at 100 degrees Celcius, the teacher explained.