1. Việc sử dụng các máy cơ đơn giản thường nhằm mục đích chính là

A. Đỡ tốn công hơn

B. Được lợi về lực

C. Được lợi về đường đi

D. Được lợi về thời gian làm việc

2. Một xe máy chuyển động đều , lực kéo của động cơ là 1600N. Trong 1 phút công sản ra 960kJ. Quãng đường xe đi trong 30 phút là:

A. s=0,018 km

B. s=0,18 km

C. s=1,8 km

D. 18km

IV, 

1. Smoking is not allowed in class.

2.He has driven all day. He has been driving 400 miles.

3. she can't cook as well as her mother does

4. I am looking forward to starting working with you

5. A man with black beard had broke her house the night before 

6.A

7.D

8.C

Chưa có gạch chân

IV.          Rewrite the sentences so that it has similar meaning as the sentences printed before, using the word(s) given.

33.   I have some homework. My sister has lots of homework.

=> My sister ………has more homework than me…………………………………………………………………………

34.   Many people still came to join the Book Fair in spite of the bad weather.

=> Although …………the weather was bad, many people still came to join the Book Fair………………………………………………………………………

35.   Watching this horror film made us feel terrified. (terrifying)

=> It ……is terrifying for us to watch this horror film………………………………………………………………………………………

1. You mustn't swim in that polluted lake, boys

=> Don't........swim in that polluted lake.................................

2. We live near the school, but they don't

=> They live....far from the school, but we don't...............................