I. Complete with past simple. then form the question and negative
chris.

1. Chris ................... (study) hard for the last test.

.................................................................................

2. You ..................... (see) harry yesterday.

.................................................................................

3. Vera ..................... (swem) in the last Olypic games.

...........................................................................................

4. They ................... (buy) a new video camera for their holiday.

.......................................................................................

5. The star .................. (arrive) in a limousine.

.........................................................................

6. The cat .......................... (hide) under your bed.

..........................................................................

7. Oh, no I! .............................. (not phone) him yeterday ! I .................... (forget)!

8. Mrs Fletcher ..................... (write) her last look ten years ago.

I.Complete with the present simple or present continuous.

1.This pie ....................... (taste) wonderful ?

2.Why ..............................(you / look) at me like that?

3.I..................................( not believe) him! He's lying!

4. what is wrong? You......................(look) sad

5.they can answer us now. They...................(think) about it

6. He can't come to the phone. He ..................... (have) a shower

7.she...........................(think) you're nice

8. I......................... (see) a dentist these days

9. They ................... (seem) happy

Phân tích đa thức sau thành nhân tử  3 x y 2 – 6 x 2 y

Một khu đất hình chữ nhật có chu vi là 124m, chiều dài hơn chiều rộng 8m. Tìm chiều dài, chiều rộng của khu đất đó.

Tính bằng phương pháp hợp lí:

a)  − 1 4 .13 9 11 − 0 , 25.6 2 11

b)  4 9 : − 1 7 + 6 5 9 : − 1 7