C1:Lấy đầy thug 5 l và lấy 2l thùng 3l

C2:Lấy đầy thùng 3l và 4l thùng 5l 

Exercise 1 : Correct the mistakes

1. She are ->is looking for him now

2.They are eat ->eating candies at the moments

3.I'm playing badminton at present

4.The Sun rise in the East->West

5.We often reads->read books in our free time

6. She constantly shout->shouting at him.

7.Her father never take->takes her to the park.

8.We study ->are studing English at present.

9.Hoa and Tom doesn't->don't my father.

10.She don't->doesn't like chocolate.

I. Choose one word whose underlined part is pronounced differently from the others in each following line.

1. A. talked B. visited C. rented D. fitted

2. A. help(e) B. friend(e) C. send(e) D. fewer(i)

3. A. stamp B. sew C. opposite D. bookstore

4. A. milk(i) B. library(a) C. dinner(i) D. polish(i)

5. A. pork(o) B. go(ou) C. hold(ou) D. cold(ou)

II. Choose the best answer (A, B, C, or D) to complete each sentence.

1. He looks different ......................... his father.(different from:khác với)

A. at B. with C. on D. from

2. ..................... novels are very interesting.

A. These B. This C. That D. It

3. .................. do you go to bed? – At half past ten.

A. Where B. What time C. How long D. Why

4. Talking is ............... common way of relaxing.

A. more B. most C. the most D. much

5. Nga lives ........... 23/234 No Trang Long street.

A. at B. in C. on D. for

6. Some people are used to ................. in crowded buses and don't mind it at all.( be used to+V-ing)

A. riding B. ride C. rode D. to ride

7. The boy is better .................... English than I am.(giỏi về môn học nào đó: at+Subject)

A. for B. with C. in D. at

8. Is it easy .................... an apartment in Ha Noi?

A. to find B. finding C. finds D. for finding

9. The class ............... at 7 o'clock in the morning.(thời hiện tại đơn)

A. comes B. starts C. ends D. plays

10. My mother takes care .................... sick children.(take care of:chăm sóc)

A. about B. of C. for D. with

Học tốt nha!

chu vi hình tròn là

   3*2*3,14=18,84(dm)

diện tích hình tròn là

  3*3*3,14=28,26(dm2)

                   Đ/S:DT:28,26dm2CV:18,84dm

4+4+8+12+20+...+356+576=1504

duyet nha

vì 13 chia hết cho( x - 3 ) nên x - 3 thuộc tập hợp Ư(13)

Ư(13)={1;13;-1;-13}

Ta có bảng sau

vậy x thuộc {4;16;2;-10}