6. She was busy, so didn't join in us. => so + clause: thế nên.

7. What about going to the cinema tonight? => What about + V-ing?

8. I suggest using energy-saving bulbs. => Suggest doing sth.

9. She wasn't beautiful but she took part in a beauty contest. => but + clause: nhưng.

10. If you work hard, you will pass the exam.

=> Câu điều kiện loại 1: If + S + V(present simple), S + will + V-inf.

IV. Give the correct form of the verbs in brackets.

1. collecting => Suggest doing sth.

2. taking => What about + V-ing?

3. turn => Should + V-inf.

4. will have => Câu điều kiện loại 1: If + S + V(present simple), S + will + V-inf.

5. goes => Câu điều kiện loại 1: If + S + V(present simple), S + will + V-inf.

V. Filling each gap with a suitable phrasal verb in the box.

1. look after: chăm sóc, trông nom.

2. go on: tiếp tục

3. Turn on: bật lên.

4. looked for: tìm kiếm.

5. turn off: tắt.