89cm

Tìm số nguyên x,y biết (x - 3).(y+4)=-7

I. 

1. D; 2. B; 3. B; 4. A; 5. C;

II.

1 - C; 2 - B; 3 - A; 4 - A; 5 - B;

6 - C; 7 - D; 8 - C; 9 - C; 10 - D;

III.

1 - They finish at eleven o'clock.

2 - She often reads books in the library.

3 - No, she doesn't.

4 - Because she always gets up early in the morning.

5 - They start at seven thirty.

IV. 

1 - My father is older than my mother.

2 - Is there a library in your neighbourhood?

3 - Minh's house isn't far from the supermarket.

4 - Unit two is easier than Unit one.

5 - My father is bigger than my mother.