1. Rút gọn các biểu thức sau:

A = \(\sqrt{31-2\sqrt{30}}\)

B = \(\sqrt{11-2\sqrt{30}}\)

C = \(\sqrt{13-2\sqrt{30}}\)

D = \(\sqrt{39-6\sqrt{30}}\)

I.             Combine each pairs of these sentences, using SO / SUCH THAT :

1.         There were many people in the hall. We couldn’t see Professor Taylor.

……………………………………………………………………………………………………

2.         The atmosphere was suffocating. Nobody could resist the temptation to go to the seaside.

……………………………………………………………………………………………………

3.         He lives far from the office. He often gets up early to catch the bus to go to work on time.

……………………………………………………………………………………………………

4.         There were very few students at the extra class. It was cancelled.

……………………………………………………………………………………………………

5.         The tornado struck with great force. It lifted automobiles off the ground.

……………………………………………………………………………………………………

6.         Grandpa held me tightly when he hugged me. I couldn’t breathe for a moment.

…………………………………………………………………………………………………… 

Exercise  1:  Inversion form

1. (the books/be) ………………………………  cheaper, I would have bought them all. 
2. (the Prime Minister/fail) …………….to get the necessary support, he would be forced to call a snap election. 
3. (the evidence/not be destroyed) …………………., the accused would have been found guilty. 
4. (you/need) ………………………….. any further assistance, do not hesitate to contact us. 
5. (the ship/ not capsize) ………………  , there would have been more survivors. 
6. (I/win) …………………… the prize, I wouldn't spend it on things I don't need. 
7. (the storm/be) ………………….. at night, the rescue team wouldn't have found the lost boy scouts. 
8. (he/decide) ………………… to come, please let me know as soon as possible. 
9. (I/ be offered) ……………….. the job, I would have to think about it. 
10. (you/have) …………… any further questions, please ask to see the manager.