Here are the activities to practice the topics on unit 4:
1. Food vocabulary
You can practise your food vocabulary in the following links:
exercise 1.1
exercise 1.2
exercise 1.3
memory game.
2. Countable and uncountable nouns: a, some or any
You can practice this topic in the following links:
exercise 2.1
exercise 2.2
exercise 2.3
Some or any in sentences and questions:
exercise 2.4
exercise 2.5
exercise 2.6
Extra activity
extra 2.1
3. School subjects
Practice the vocabulary about school subjects in the following link:
exercise 3.1 Listen to each subject, then click on "practica" and do activities 1 and 2.
Game
4. Frequency expressions.
exercise 4.1 Here you have a good summary of frequency expression followed by a speaking activity where you can practice with a partner.
5. At a restaurant
Here there is some more practise:
exercise 5.1
exercise 5.2
6. Because
exercise 6.1
That's all for now.
Remember to copy the activities fully onto your notebook. This will help you memorising each topic.