1. When the weather is nice, my family spend weekend at my grandparent's farm.

2. You should do some morning exercise. It is good for your health.

3. Jessica usually plays sports in her free time but sometimes she goes camping with her classmates.

4. Which city is bigger , Mexico or London ?

5. Trash land pollutes rivers and oceans.

1. teach : teaching

2. cycle : cycling

3. take : taking

4. skip: skipping

5. work : working

6. buy: buying

7. chat : chatting

8. fly : flying

9: sing : singing

A

tính bằng niềm tin hả cậu

Dear sister ,

I went to camping with my classmates. We went to Bai Xep in Phu Yen. The weather was very good. First day, I played game and sang songs about campfire. Next day, we swim in the beach and visited somewhere by bus. Finally , we came back. Everything was great at the camp had some rulers. We had to went to bed at ten. We had to helped wash up. But we didn't have to do the cleaning. I miss you, mum and dad. See you later.

Kiss

Rewrite the following sentences:

1. No one in my class is more beautiful than Lien.

2. How high was Lan last month.

3. It wasn't rainy yesterday.

4. He didn't get up early in this morning.

5. She was a bad learner last year .

1. Go

2. Are

3. is coming ; is

1. A

2. D

3. B

suy ra a=2m,b=2n,(m,n)=1,m nhỏ hơn hoặc bằng n

vì a.b=4050 suy ra 2m.2n=4050=4.m.n=4050

mà 4050 ko chia hết cho 4 suy ra sai đề