Complete exercise 20.3

The answers for each situation are as follows: 1. There are a lot of black clouds in the sky. It is going to rain. 2. Tom is leaving home. He has to be at work at 8:45, but the journey takes 30 minutes. He is going to be late. 3. There is a hole in the bottom of the boat. A lot of water is coming in through the hole. It is going to sink. 4. Amy and Ben are driving. The tank is nearly empty. They are going to stop at the nearest petrol station.