Помогите пожалуйста с задание)Complete these sentences with must or cant +

Помогите пожалуйста с задание)
Complete these sentences with must or cant + suitable verb.
Example: Youve been travelling all day. You must be very tired.
1. Brian has got three houses, six cars, a yacht and a helicopter. He...........a lot of money.
2. (The doorbell rings). I wonder who that is. It........Jim. He said he would some after 7 oclock and its only 6.30 now.
3. I wonder why Tom isnt at work today. I suppose he....ill.
4. John seems to know a lot about history. He...... a lot of books.
5. Jacks putting on his hat and coat. He........out.