⑤. What are the solutions to problem 1?

⑥. What are the solutions to problem 2?

Ⅳ.Writing and speaking :

　　Do exercise 5, 6, 7 to show interest and keep a conversation going. Read through the example dialogue then make up a new one with your partner.

(The purpose is to practice showing interest when listening to another speaker in a conversation and involving the person who is listening to you.)

Ⅴ. Homework

Practise using the useful words about protecting the sea by making sentences with them:

protect, pollute, pollution, waste, deal with, be responsible for, break the law, punish, keep a record of , control, communicate.