Question

V. Choose the correct modal verb 1. They could/can make crafts, draw in Art lessons when they were in the fifth form. 2. You can/can't be a well-educated person if you don't know at least one foreign language. 3. Pupils mustn't/must pay much attention to all the subjects because the are all important.​

Answer 1

1. They could make crafts, draw in Art lessons when they were in the fifth form. (could is used to talk about ability in the past)

2. You can't be a well-educated person if you don't know at least one foreign language. (can't is used to express impossibility)

3. Pupils must pay much attention to all the subjects because they are all important. (must is used to express obligation/prohibition)