EX1:

1/ what is Mrs.Nga doing at secondary school

2/ How often does Nam fly a kite?

EX2: 

1/ It is hot in Viet Nam in april/

2/ When are you go out with your friends  

1/ Let's go camping

→ How about going camping 

2/ She is best worker

→ No body is better than her

3/ what about listening to some music ?

→why don't we listen to some music?

4/ How much are there book?

→ what is the price of these book?

5/ My house is newer than his one

→ His house is older than my house 

6/ No house in my village is bigger than hers 

→Her house is the biggest house in my village

7/ Nam is not as skillful as Hung

→ Hung is more skillful than Nam

8/ She is the most beautiful girl in her school

→No girl is more beautiful girl in her school

9/ There bananas are more expensive than those ones 

→Those bananas are cheaper than there bananas

10/No people in his office is as clever as Mrs.Kim

→Mrs.Kim is most clever in his office

she often goes camping

what do you want to eat ?

the staff has agreed to work extended hours this week so that they can finish the project on time

ta có : ( -5/28 +7/4 + 8/35 ) : (- 69/20)

= ( -25/140 + 245/140 + 32/140 ) x (-20/69)

= (252/140) x (-20/69)

= (9/5) x (-20/69)

= (- 12/23)

tính nhanh:  

2 x 3/7 + (2/9 - 10/7) - 5/3 x 9

= 6/7 + 2/9 - 10/7 - 5/3 x 9 = 6/7 + 2/9 - 10/7 - 15

= (6/7 - 10/7 ) + (2/9 - 135/9) = ( - 4/7 ) + (-133/9 )

= (- 36/63) + (-931/63) 

= (- 967/63) 

There are five books on the table

she often washes her face in the morning

I usually watch cartoons in the afternoon

Can I help you?