1. Scientists believe dolphins can save energy by swimming by the side of ships.
2. I am not sure the white sand beaches will still be there in a hundred years.
3. I don't think you've forgotten the trip we went on last summer.
4. The little boy doesn't know the new teacher will like him.
5. It is certain light green can make our class more energetic.
6. He still can't decide he will go to the party tomorrow.

二、将下列句子改为宾语从句
1. Can yellow bring people success?
It isn't certain .
2. Kitty will come to my birthday party.
I hope .
3. Do red roses represent love?
Can you tell me ?
4. Some college students in the UK have difficulty finding jobs.
A recent report says .
5. Has Simon been to Shanghai?
The teacher asks .
6. Is Mr Li always willing to work extra hours?
The interviewer is asking .
7. A miss is as good as a mile.
All of us know .
8. Can I paint the walls of my bedroom blue?
I don't know .
9. Will the flight be delayed because of the bad weather?
We wonder .
10. Our favourite colours match our characteristics.
I'm sure .

三、改写句子
After reading the text, Simon plans to design a survey. Here are some of the questions.
1. Do you often notice the colours around you?
2. Does your school use yellow school buses?
3. Did your best friend wear blue yesterday?
4. Is pink your sister's favourite colour?
5. You will give me correct answers.
Lucy wants to do it, but she is busy cooking now. Please tell her about the questions.
1. Simon wants to know .
2. He asks .
3. He wonders .
4. He doesn't know .
5. He believes .