rút gọn biểu thức chứa căn số học

a)-√20+3√45-6√80-1/5√125

b)2√3-√75+2√12-√147

c)3/2√12+7/5√75-9/10√300+11/6√108

Hiện nay tuổi mẹ gấp 5 lần tuổi con,mẹ hơn con 28 tuổi

a) Tính tuổi của mõi người hiện nay

b) Hỏi mấy năm nữa thì tuổi mẹ gấp 3 lần tuổi con

tìm 2 số tự nhiên có tổng bằng 2178 biết rằng nếu viết thêm một chữ số 0 vào tận cùng bên phải số bé thì được số lớn

Put the verb into the correct form

1.It appears.........(be) raining

2.We intend.........(go) to hte countryside this weekend

3.I pretended........(be) sick so I didn't have to go to work

4.Can you inmagine.........(live) without TV?

5.They tolerate.......(smoke) but they prefer people not to

6.I anticipate.........(arrive) on Tuesday

7.A wedding involves......(negotiate) with everyone in the family

8.He denies.......(steal) the money

9.He claims.......(be) a millionaire but I don't believe him

10.I expect.......(be) there about seven

11.Julia reported.......(see) the boys to the polices

12.It tends........(rain) a lot in Scotland

13.Do you recall........(meet) her at the party last week

14.She mantioned........(go) to hte cinema, but I don't know what she decided to do in the end

15.The teenager refused.......(go) o0n holiday with his parents 

16.I understand......(be) late once or twice, but everday is too much

17.I wold prefer you........(come) early if you can

18.That criminal deserves.......(get) along sentence

19.She completed.........(paint) her flat

20.We arranged.......(meet) at four but at four thirsty she still

Put the verb into hte correct form

1.She delayded......(get) out of bed

2.He demanded.......(speak) to hte manager 

3.I offered......(help)

4.I miss.......(go) to the beach

5.We postponed........(do) our homework

6.I'd hate.........(arrive) to late

7.She admitted.........(steal) the money

8.I chose..........(work) here

9.She waited.......(buy) a drink

10.I really appreciate........(be) on holiday

11.I couldn't help.........(laugh)

12.It seems.......(be) raining

13.I considered.......(move) to spain

14.They practise.........(speak)

15.Finally I managed........(finish) the work

16.I really can't stand.........(wait) for the bus

17.Unfortunately, we can't afford........(buy) a new car this year

18.She risked........(be) late

19.I'd love........(come) with you

20.I prepared........(go) on holiday

Put the verb into the correct form

1.I don't fancy.........(go) out tonight

2.She avoid........(tell) him about hers plans

3.I would like........(come) to the party with you

4.He enjoys........(have) a bath in the evening

5.She kept.......(tall) during the film

6.I am learning......(speak) English

7.Do you mind.......(give) me a hand?

8.She helped me........(carry) my suitcases

9.I've finished.........(cook).Come and eat

10.He decided.......(study) Bigology

11.I dislike.......(wait)

12.He asked.......(come) with us

13.I promise.......(help) you tommorrow

14.We discussed.........(go) to the cinema, bat in the end we stayed at home

15.She agreed.......(bring) the pudding

16.I don't recommend.......(take) the bus, it takes forever

17.We hope.......(visit) Amsterdam next month

18.She suggested.......(go) to hte museum

19.They plan.......(start) college in the autumn

20.I don't want.......(leave) yet

11.Ask him (come).......in.Don't keep him (stand)......at the door

12.The boys next door used (like).......(make).......and (fly).......model aero planes, but they seem to have stopped (do) that now

13.I knew I wasn't the first (arrive)........, for I saw smoke (rise) from the chimney

14.We watched the man (saw)......the tree and as we were walking away heard it (fall).......with a tremendous crash

15.I hate (see).......a child (cry).......

16.We watched the children (jump).......from a window and (fall).....into a blanket held by the people below

17.It is very unpleasant (wake).......up and (hear)......the rain (beat)........on the windows

18.He saw the lorry (began)......(roll).......forwards but he was too far away (do).......anything (stop).....it

19.There are people who can't help (laugh).......when they see someone (slip).......on the banana skin 

20.I prefer (drive).......to (be drive)............

Put the verbs in brackets into the correct form

6.We heard the engines (rour)......as the plane began (move)......and we saw the people on the ground (wave)........good-bye

7.It's no good (write).......to him, he never anwers letter.The only thing (do).......is (go).........and (see)......him

8.Why did you go all round the field instead of (walk).......across it. I didn't like (cross).......it because of the bull.I never see a bull without (think)........that it wants (chase).......me

9.The people in the flat beloww seem (be)........having a party.You can hear the champagne corks (thud)........against their ceiling

10.I don't like (get)........bills but when I do get them I like (pay)......them promptly

Put the verbs in brackets into the correct forrm

1.I caught him (climb).......over my wall.I asked him (explain).......but he refused (say)........anything.so in the end I had (let)......him (go)......

2.When at last I succeeded in (convince).......him that I wanted (get).........home quickly he put his foot on the accelerator and I felt the car (leap)........forward

3.I'm not used to (drive)........on the left.When you see everyone else (do).........it you'll find it quite easy (do).......yourself

4.It is pleasant (sit)........by the fire at night and (hear)........the wind (howl)........outside

5.There was no way of (get)......out of the building except by (climb)........down a rope and Ann was too terrified (do).......this

Làm nhanh giúp mk nhé!Thanks!