Task 3 Choose the correct answer. 1. My brother used to/ would be very naughty when he was small. 2. Did you use to/ Would you have long hair when you were young? 3. My grandparents used/ would go dancing a lot as teenagers. 4. Jack didn’t use to/ didn’t used to ride his bicycle very often as a child. 5. My father used to /would love rock music when he was a student. 6. How often did Ben use to/ did Ben used to play football when he was 10?

1. Solids, liquids and gases can conduct electricity if there is a sufficient number of free electrons or ions.
2. In an insulator, electrons are too tightly fixed by chemical compounds to be able to move, and the material normally and does not conduct electricity.
3. Opposite charges thus experience the attracting forces, while like charges are pushed aside.
4. The force is proportional to the product of the charges and inversely proportional to the square of the distance between them, this ratio is known as Coulomb's law.

1 You keep these kinds of food very, very cold. FROZEN.
2) This type of food is small and you have it between meals. SNACK.
3) Drinks that have got bubble are this. FIZZY.
4) When you cook something in hot oil, you do this. FRY.
5) This describes food that is nice. TASTE.
6) The different things that you use to make a cake are these. INGREDIENTS.
7) Fruit and vegetables are examples of this type of food. FRESH.
8) This is what you call food or drinks without sugar. SUGAR-FREE.
9 ) This looks and tastet like butter. MARGARINE.