1. Why is that man looking around like that? He ____ be lost.

2. That woman ____ be a doctor! She looks far too young.

3. John always fails the tests, even though he's clever. He ____ study enough.

4. The food is really good at that restaurant. They ____ have a great chef.

5. Who's that at the door? It ____ be Susie - she'll still be at work now.

6. This ____ be John's house. This house has a red door and it's number 24, just like he said.

7. Julie ____ have much money or she would buy a new car. Her old one is falling apart.

8. He ____ be at work now, can he? It's nearly midnight.

9. What a lot of lovely flowers you have! You ____ really like gardening.

10. David ____ drink a lot of coffee. He's finished two packets already this week.