1 do you do

2 had done - went

3 went - had read

4 will attend

5 hadn't worn

6 to be

7 weren't sleeping - were playing

8 to be

9 had lived - moved

10 locking

11 had work - retired 

12 told - had learned

13 won't call

14 had met

do you do

had done-went

went- had read

will attend

hadn't worn

to be

\(\dfrac{x}{27}=\dfrac{2}{9}-\dfrac{1}{3}\Rightarrow\dfrac{x}{27}=-\dfrac{1}{9}\Rightarrow\dfrac{x}{27}=\dfrac{-3}{27}\Rightarrow x=27\)

\(\dfrac{x}{27}=\dfrac{2}{9}-\dfrac{1}{3}=-\dfrac{1}{9}\Rightarrow x=-\dfrac{1}{9}.27=-3\).

Bài 10:

Chiều rộng là: 35x4/7=20(cm)

Diện tích là 35x20=700(cm²)

 bài 10: Chiều rộng của hình chữ nhật là: 35.4/7=20 (cm)

Diện tích của hình chữ nhật là: 35.20=700(cm^2)

a: Xét tứ giác AEHF có 

\(\widehat{AEH}=\widehat{AFH}=\widehat{FAE}=90^0\)

Do đó: AEHF là hình chữ nhật

câu 5 vs câu 6,thx mn

Nhiều góc chụp của em bị khuất,anh ko nhìn đc nên em Tham Khảo nhé!

Many people (1) …are…….. attending the international robot show in Ho Chi Minh City today. Young people are very interested (2)……in…… home robots. These robots can cook, (3) …make…….. coffee and tea, make bed, do the washing up clean the floors and toilets and do the gardening.

The children like teaching robots. These robots can help students (4)……study.. Teaching robots (5)…can……..teach students mathematics, music and other subjects. They can help children speak, write, read and listen English (6)…songs…… Adults like worker robots (7)…because………they can build houses, big buildings and bridges and they can build cars, doctor robots can help to find oụt the diseases for sick people and space robots can build space stations (8)……on… the Moon.

III.

1. hasn't done

2. took

3. see... will give

4. go

IV.

1. are

2. in

3. make

4. floors

5. study

6. can

7. well

8. because

9. on