1. They believe he is armed

-> It is................................................

2. It's time for us to study seriously

-> It's time..........................................

3. My father works for a company. It makes car.

-> My father works for.........................................

4. I put on the heating because it was very cold.

-> It was very cold..........................

They believe he is armed

-> It is................................................

" You'd better put your money in the bank" he said to me.

-->He advised......................................................................