1. Make a question for each of the underlined phrases in the following sentences:

1. Their guests left for home because it was very late.

=> …Why they guests left home ?

2. I have to tidy the living room.

=> …What do you have to ?

3. The secretary gave Mr. Green a lot of information.

=> …How much information did the seceretary give Mr.Green?

4. The two men returned to the office at three o’clock.

=> What time did the two men return to the office ?

5. You ought to put the rug between the armchair and the couch.

=> …Where do you ought to put the rug ?

6. My mother often goes to work by bus.

=> …How does your mother go to work ?

7. Her sister bought four pairs of stockings yesterday.
=> How many pairs of stockings did her sister buy yesterday ?

8. Mr. Tuan goes to Ha Noi three times a month.

=> …How long does Mr . Tuan go to Ha Noi?

9. The name of that book by Mark Twain is Tom Sawver.

=> ……What is the name of that book by Mark Twain ?

10. She had to wear glasses at the age of eleven.

=> ……How old did she have to wear glasses?

What the ......... 

sao xung quanh tối vậy bạn

uk không được đâu bạn

Bài giải

Diện tích mảnh đất là:

[ 18+12]*15:2=225[m2]

Diện tích mảnh đất dùng để làm nhà là:

225*2/5=90[m2]

Diện tích mảnh đất còn lại là:

225-90=135[m2]

Đáp số :135m2

1. biggest
2.warmer
3.hottest
4.best
5.longest
6.noisier

B2: make sentence with “ adj+enough+ (for sb)+ to V

1 . they/ old/ drive a car
=> They are old enough to drive a car

2 .the water/ cold/  you/ drink
=> The water is cold enough for you to drink

3. she/ not/ strong/ carry/ that suitcase
=> She doesn't strong enough to carry that suitcase
4.the weather/ hot/ children/ go swimming
=> The weather is hot enough for children go swimming

5. this story/ amusing/ make/ all people/ laugh
=> This story is amusing enough to make all people laugh

6. this exercise/ not/ easy/ him/ do
=> This exercise doesn't easy enough for him to do

B3: make sentence with “ enough + N+ toV

1 . she/ have/ eggs/ make/ cakes
She has enough eggs to make cakes

2 . my father/ not buy/ paint/ repaint/ his house
My father doesn't buy enough paint to repain his house

3 . we/ have/ food/ drink/ today
We has enough food drink today.

4 . he/ not have/ money/ travel/ around the world
He doesn't have enough money to travel around the world

5 . this room/ have/ toys/ children/ play
This room has enough toys for children to play

6. the hopital/ not have/ rooms/ patients/ stay
The hospital doesn't have enough rooms for patients to stay

ti so thoi gian di 

5:7 = 5/7

vi quang song ko doi nen thoi gian ti le nghic voi van toc 

5/7 chinh la ti so van toc di nguoc dong va xuoi dong

hai lan van toc dong nuoc chinh la hieu van toc

Vi

Vthuc + V dong nuoc = V xuoi dong =V thuc + 1 V dong nuoc 

V thuc - V dong nuoc = V nguoc dong = V thuc - 1 V dong nuoc

Vay

V xuoi dong - V nguoc dong = V dong nuoc + V dong nuoc= V dong nuoc X 2

van toc xuoi  dong la

60 : (7-5)x5=210 m /phut

210 m/phut =1260m/phut = 1,26 km/phut 

quang duong AB dai la

1,26 x 5 =   6,30km

dap so 6,30 km