b48:lập tất cả các tỉ lệ thức có thể đc từ tỉ lệ thức -15/ 5.1= -35/11.9

tìm x trong các tỉ lệ thức sau:

a) x/27=-2/3,6

b) -o,52:x=-9,36:16,38\(\dfrac{ }{ }\)

I. rewrite the sentences.

1. nathan missed the bus. He was late for school. (because)

2. keep the food covered. the flies will contaminate it. (or)

3. In 1990./we/move/to anither city/.//

4. my mother/make/two cakes/four days ago/.//

5. on vtv3, there are three films on this week. (make question)

5. on vtv3,there are three films on this week. (make question)

III. Complete the sentences with the correct form of the words.

1.the room will look more.............if there is a picture on the wall.   (beauty)

2.you shouldn't eat..............food    (health)

3.she often feels...........when she get bad marks.       (happy)

4.give old clothes to charity instead of...............them away.     (throw)

II. Compelet the senten with the correct form of the verbs.

1.(not be)                        very happy yesterday.

2.how many languages.................Hoa (speak) ..................well, twolanguages?

3.what will happen if her phone (not open)...................?

4.I(not see) ................... john for a long time. I (see)....................?

5.If you put the glasses into very hot water,they.......................(crack).

6.No one.................(help) if you don't hepl yourself.