{ 10;11;12;13;14;................................................................; 98;99;}

1.were they.

3.yourself

8.made

Từ 1 -> 9 có số chữ số là (9-1)+1=9 chữ số =. Có 9.1 chữ số

Từ 10 -> 99 có số chữ số là (99-10)+1=90 số => có 90.2 = 180 chữ số

Từ 100 ->253 có số chữ số là (253 -100)+1=154  số  => có 154.3 = 462 chữ số

Vậy cần có 9.1+90.2+154.3 =651 số để đánh số trang của một cuốn sách  252 trang

1.How often does your mother go to seaside for a holiday?

2.What is the weather like in Hanoi in winter?

3.How much sugar do you need to make coffee?

4.We are making coffee but we don't have any milk.

5. Who is the most intelligent and hard-working in your class?

Was English spoken all over the world?

1. The last time I came back to the countryside two weeks ago.

2. Shall i ask you some information about the tour?

3. She has a window opened.

4. She has been playing the organ for two years.

5. She said that he always had dinner there.

6. Can I help you cut the sandwiches?

7. It is the first time i have spoken to foreigner.

1. a.

2. c.

3. b.

4. d.

5. b.

1. It is lovely to seeing you again .

->seeing => see

2. People cut the bottles in small pieces

->in => into

3. People mix the small pieces in certain chemicals

-> in => with

4. Cloth bags used instead of plastic bags

-> used => are used

Hi! My name is Nga.I am 12 years old. ...... Secondary School is where i study at. There are many activities and subject, aming of them i like English the best. Because English make me feels like i can connect to whole world. At school, I improve it like writting and reading and i think that English is very interesting. Bye!!!