1c 2d 3thaan thuộc hả :)? 4b 5d 6b 7a 8b 9c 10c

1. John .point out.. his old school friend in the photograph

.2. The policeman asked him to .pull over.. for a breathalyser test.

3. Ill give you the money, but when will you ..pay back . me ?

4. That building will be .pull down,.. next week.

5. It will take me two years to .pay off.. my loan.

1. He …would not be…ill today if he …had not walked home in the rain last night

2. You’ve been playing with that cat for hours. If you ………had been……… (be) allergic to cats, you ……would know…… (know) by now.

3. We ……would not be…… (not be) stuck here now if you ……had taken…… (take) the car to the garage before we left for our holiday.

4. If I ……had been…… (be) you, I ………would not sell…… (not sell) my car before I bought another one. How will you get to work now?

1c 2d 3thaan thuộc hả :)? 4b 5d 6b 7a 8b 9c 10c

- I've got a headache.->I hurt my head
- I've got a backache.->I hurt my back
- I've got an earache.->I hurt my ear
- I 've got a stomach-ache.->I hurt my stomach

1-was reading-came

2-were-buying

3-were drinking-ate

4-was-getting-saw

5-took-was ringing

6-was listening-was playing

7-were lying-were swimming

8-was doing-was cleaning

9-wasn't waking

10-was sitting-saw

1-was reading-came

2-were-buying

3-were drinking-ate

4-was-getting-saw

5-took-was ringing

6-was listening-was playing

7-were lying-were swimming

8-was doing-was cleaning

9-wasn't waking

10-was sitting-saw

chí phải với quyết chí

đúng ko dị :)

bạn tự làm bài giải đc khum tui có các bước giải thay vô là làm đc

Gọi CTHH của hợp chất tạo bởi A và B (A,B các chất trên đề bài) là AxBy (x,y nguyên)

theo quy tắc hoá trị: x.a=y.b (a,b là hoá trị của chất A,B đề bài cho sẵn hoá trị r)

chuyển tỉ lệ: x/y=b/a=b'/a'  (a' và b' là số nguyên nha)

chọn x=a'  và y=b'

-> CTHH (thay x,y vô là xong)

Này là cách GV giảng cho tui mong bạn hiểu