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2750 olm duyệt đi

BT1: Complete the following sentences, using couldn't and the verbs in the box

Từ đã cho: listen, find, finish, play, understand, sleep, go, hear

1. We ___couldn't play__ tennis because the weather was bad

2. Tom __couldn't listen___ to music because his CD player was broken

3. I was very tired but I __couldn't sleep___

4. My dad __couldn't go ___ to work because he was ill

5. I ___couldn't understand __ Jane because I don't speak German

6. We ___couldn't hear__ the teacher because the students were very noisy

7. Phong __couldn't find ___ his pen. It wasn't in his school bag

8. Mai wasn't hungry. She __couldn't finish___ her lunch

yffgyjgyujtguygjhghg

Tìm lỗi sai và sửa lại giúp mk

1.( Every) student who (majors ) in English ( are=> is ) ready to participate ( in )the orchard contest

2. (Do you know )(the reason )(when=> why ) English men travel( to the left)

3.she (is) (the most )beautiful woman ( whose=> whom ) I have (ever )met

4.(mother's Day) is (the day )when children show (their love )to their mother (on=> bỏ on )

5.(the new year day) is the day (where=> when ) all my family member( gather )and enjoy it( together)

6.it is (complicated )(because) pollution (is caused )by things (when=> which )benefit people

7.(the policeman) must try( to catch) those men (whom=> who ) drive (dangerously)

8,he was (very surprised )(when )he visited London (in that=> where ) the drivers always drive (on the right hand side) of the street

9. (That) is the (man) who (he=> bỏ he) told me (the bad new)

10.(I don't know) the reason (on when=> why ) (Jonathan) was( sacked)

11, the singer (about who=> about whom ) I (told) you yesterday (is coming) here (tomorrow)

12,(the) man( whom=> who ) helped you yesterday( is) a television (reporter)

13. What (is)(the name) of the girl (whom=> who) (has just come) in?

14. (Do you know )(the reason) (when=> why )Englishmen( travel) on the left side of the streets?

15.( If )you want a (particular )book the person( to see )is the librarian (she is wearing=> who is wearing ) glasses

16,I (enjoyed )the book (that) you( told me )to read (it=> bỏ it )

17,that (commentator) (his name=> whose name )I (have forgotten) is very (well known)

18 ,Amelia Earhart ( that=> who )was one of the pioneers (in aviation) (attemped to fly )the world in1937 but she and her plane mysteriously disappeared (over )the Pacific Ocean

19.(sunday) is( a day )(where=> when) we( expect)

20. (Have )you ever( been to) Da Lat ( when=> where ) my father has a (lovely) house

21. That is(a)( new) circus which ( formed=> be formed )(in )1992

22.he( is said )(to is=> to be) 108 (years) old (now)

23. (A) letter (is going) (to send=> to be sent )(to Ann) by Tom

24.gold is (believed) to( be discovered) (in 18th=> in the 18th )century

25.in the future (human workers) might be (replace=> replaced ) by robots( in dangerous areas) (such as) nuclear power plant or coadjutor mines

26.john has (been worked=> been working ) at (the bakery )for (nearly )40 years (now)

27.our (houseguests) (are) going (to be arrived=> to arrive )tomorrow( afternoon)

28."(what )(was happened=> happened )yesterday( while )I was out ""( I don't know )"

29.(when) the children (went to )the zoo they (were seemed=> seemed )very (happy)

30.coffee (was making=> was being made )when I (walked )(into )the kitchen (yesterday)

 Đặt 
S=1 +2+..+n 
S=n+(n-1)+..+2+1 
=> 2S = n(n+1) 
=> S=n(n+1)/2 
=> aaa =n(n+1)/2 
=> 2aaa =n(n+1) 

Mặt khác aaa =a*111= a*3*37 

=> n(n+1) =6a*37 
Vế trái là tích 2 số tự nhiên liên tiếp 
=> a*6 =36 
=> a=6 
(nêu a*6 =38 loại) 

Vậy n=36, aaa=666

hoàn thành các câu sau với dạng so sánh hơn của tính từ

lan is shorter than Nam

Nam is__taller than Lan_____

london bigger than ha noi

ha noi is__smaller than London _____

III. Put the verbs in to the correct form

My mother looks ___after___ sick people in hospital

I am worse __at____ cooking meals than my sister

Students take part ____in___many activities after school

I . Finish the second sentence in such a way that means the same as the first one

1. It took Mr Hoang half an hour to repair his broken car

-> Mr Hoang spent __half an hour repairing his broken car_____

2. How heavy is the chicken ?

-> What ___is the price of the chicken?____

3. Watching cartoon is more interesting than reading comics

_-> I prefer __watching cartoon to reading comics _

4 . We have two - month summer vacation

-> Our summer vacation lasts ____two months _________

5. We have a two - month tourist acttactions

-> There___is our two-moth tourist attractions ____

6. We always cycle safely

-> We are ____always safe cyclist _____

7. What is the price of this face mask ?

-> How much ___does this face mask cost?____

8 . Are you interested in taking part in social activities ?

-> Do you __like taking pert in social activities?__