Fill ONE suitable word into each numbered blank.

One day last summer a boy of ten took (1) ____________old tyre from his father’s garage and went down to the beach to (2) ___________. Although he could not (3) ____________and his mother had told him not to go near the water. But he felt hot so he took no notice of (4) ____________warning. Before long the wind (5) ___________him out to sea. His sister saw (6) ______________but by this time he was (7) _________far out for anyone to reach him. Then someone had the idea to (8) _______________the police. In a few minutes a helicopter was flying (9) ____________the boy and he was soon (10) ___________to safety. Cases like this (11)__________ every day in summer and sometimes people (12) ___________not so lucky. What surprises police is (13) ______________people know it is dangerous to go to the (14) ____________when they (15) ___________swim. Yet, they keep doing so.

There have been countless stories of dolphins appearing to (1) __________with humans. But a recent incident has convinced a group of life guards that some dolphins were (2) __________attempting to help them – by protecting them from a shark!

The lifeguards were on a training exercise in the sea when the dolphins swam towards them at considerable (3) ____________, then circle them repeatedly, hitting the surface of the water with their fins. (4) ______ first, the swimmers were puzzled by the dolphins’ (5) ______________, but then began to fear they’d swum too close to some baby dolphins by (6) ___________, and disturbed them.

Suddenly, one of the lifeguards spotted a small shark some way off. He realized that the dolphins had been (7) __________a lot of noise and causing general chaos in order to (8) __________off the shark. And to his relief they (9) ____________in doing so, because the shark soon disappeared. However, the dolphins insisted on staying until a colleague’s boat safely (10) _________the swimmers. What an experience!

1. A. support B. assist C. co-operate D. benefit

2. A. surely B. absolutely C. totally D. definitely

3. A. distance B. pace C. time D. speed

4. A. On B. In C. At D. The

5. A. occupation B. behavior C. situation D. attitude

6. A. accident B. confusion C. error D. fault

7. A. doing B. making C. having D. trying

8. A. call B. set C. put D. take

9. A. managed B. succeeded C. achieved D. resulted

10. A. picked up B. came over C. got away D. caught up

a) Gpt: \(\left(1-2x\right)\sqrt{x^2+1}-2x^2-7x-1=0\)

b) Giải hệ: \(\left\{{}\begin{matrix}\left(x+y\right)^2+y^2+x+4y=0\\y\left(x+y\right)^2=2x^2+2x+13y\end{matrix}\right.\)

a) Gpt: \(\left(1-2x\right)\sqrt{x^2+1}-2x^2-7x-1=0\)

b) Giải hệ: \(\left\{{}\begin{matrix}\left(x+y\right)^2+y^2+x+4y=0\\y\left(x+y\right)^2=2x^2+2x+13y\end{matrix}\right.\)

Correct the mistakes

1. The smart phone is very expensive, is it?

2. The film was very great, wasn't the film?

3. Jane, you haven't got a pen, haven’t you?

4. She has a lovely voice , hasn’t she?

5. Kate doesn't know how to make a birthday cake, does Kate?

6. This is a nice meeting, isn’t this?

7. Your brother didn't like watching TV in his free time, does he?

8. Mary is reading a book in her room, is she?

9. His parents won't buy him the new game, will he?

10. Baird did not produce the first TV picture in 1920, didn’t he?

11. They never go to the theater, don't they?

12. He and I are in the same class, aren’t they?

13. Let’s go out for some cold drink, should we?

14. No one is absent from school today, is he?

15. Something goes wrong with your computer, don’t they?