Give the correct of verbs in brackets:

1.the schoolboys have just bought some paint .... their classroom

A.decorating B.to decorate C.tobe decorate D.to have decorated

2.my children are excited about .... football maches on tv

A.watch B.watching C.to watch D.watched

3.children expect ... to water park at the weekend 

A.to take B.to be taken C.taking D.being taken

4.the boy was worried about.... for not doing his homework

A.to punish B.being punished C.punishing D.to be punished

5.Mr smith decided ....a new tv

A.to buy B.buying C.bought D.to be bought

6.the girl was made .... the classroom the whole week

A.clean B.to clean C.cleaning D.to be cleaned

7.my teacher doesn't permit us .... cellphone in class

A.to use B.using C.to be use D.use

8.IT's no use ... his opinion on account of his disinterest

A.asking B.to ask C.ask D.asks

9.the applicants seem... for the job interview carefully last week

A.to prepare B.to have prepared C.preparing D.having prepared

10.she appeared ... someone to drive her home from the party last night

A.has asked B.to ask C.asking D.having asking

11.the thieves admitted ... into the man's house ....a large amount of money

A.having broken / to steal B.to break/ to steal C.breaking/stealing D.to break/has stolen

12.I have always regretted .... harder at lower-secondary school

A.not to study B.not to have studied C.having not studied D.not studying

13.He was the first runner ... the marathon

A.to finish B.having finished C.finishing D.to be finished

14.The police made every computer ....by the traffic regulation

A.to abide B.abiding C.abide D.to have abide

15.he had hopes of ..... for the leading part in the play

A.choosing B.being chosen C.to choose D.to be chosen

16.peter hoped .... to bill's party so that he could make friends with other people

A.inviting B.being invited C.to invite D.to be invited

17.the children enjoyed.... present at chrismas

A.giving B.being given C.to give D.to be given 

18.Joe finally admitted ... For not doing his homework
A.to punished B.being punished C.be punished D.punishing

19.She refused....the information with us
A.sharing B.to share C.to be shared D.share

20......directly at the sun may damage your eyes if you don't wear
A.To look B.looking C.having looked D.looked

21......directly at the sun may damage your eyes if you don't wear
A.To look B.looking C.having looked D.looked

Give the correct of verbs in brackets:

31.I imagined (win) ......the first prize in the speaking competition

32.I haven't studied for ages and I'm finding it hard to get used to (study)............... every day

 33.I feel that learning English will help (improve)............my chances of promotion at work.

34. John used to (travel)...................... a lot in his job but now,since his promotion, he doesn't.

35.European drivers find it difficult to get used to (drive)..................on the left when they visit Britain.

36.My father refused (lend)..........his car because of her carelessness

37. The boys admitted (not/collect)........litter this morning.

Give the correct of verbs in brackets:

21. They would win the contest if they (practise)......more last week.

22.The coach (leave)...........the stadium by the time some journalists come.

23. The girls denied (punish)....due to their being late.

24.My father advised me (go) .......swimming in the early morning.

25.This film deserves (win)....the first prize in on the telefilm festival.

26.We hope (win) .....the first prize in the competition last week.

27.It's no good (give) .......him this smart phone because he doesn't know to use it.

Give the correct of verbs in brackets:

11. I would like you (eat).....out with us tonight.

12. My mother often has her friends (show).....how to cook a healthy meal

13. We were worried about (hand).... in our assignment last week.

14. Since last summer, I (not/keep).....contact with some schoolmates.

15. My child (give).....a nice present on his birthday every year.

Give the correct of verbs in brackets:

1. My parents are considering (buy).........a new house in the centre of this city.

2. Mary decided (not/ put)....the meeting.

3.The boys had no difficulty in (persuade) ......the man to let them (play) ...... in his garden

4. The boss often makes his employees (work).....overtime at the weekend. the pollution.

5. She suggested (not/hold)......the discussion about the pollution

6.The teacher ordered us (stop)......(write)..........when the bell rang

7.It's silly of him (spend)......a lot of money (buy)......a second hand bike

8. My mother will help me some housework if she (have)......much free time

9. After they have completed this project, they (move).....to another city

10. We should avoid (travel)......in the rush - hour traffic.

: Một sợi dây AB dài 100 cm căng ngang, đầu B cố định, đầu A gắn với một nhánh của âm thoa dao động điều hòa với tần số 40 Hz. Trên dây AB có một sóng dừng ổn định, A được coi là nút sóng. Tốc độ truyền sóng trên dây là 20 m/s.

       a. Tìm số bụng sóng.

       b. Tìm số nút sóng.

       c. Tìm tổng số bụng và nút sóng.

: Trong thí nghiệm Young về giao thoa với ánh sáng đơn sắc, khoảng cách giữa hai khe là 1 mm, khoảng cách từ mặt phẳng chứa hai khe đến màn quan sát là 2 m và khoảng vân là i = 0,8 mm. Cho c=3.\(10^8\)m/s

       a. Tìm bước sóng ánh sáng làm thí nghiệm.

                        b. Tần số ánh sáng đơn sắc dùng trong thí nghiệm là bao nhiêu?

Trong thí nghiệm giao thoa Young, nguồn sóng có bước sóng là 0,5\(\mu m\) khoảng cách giữa hai khe hẹp là 1,5 mm, khoảng cách giữa hai khe đến màn là 3 m.

       a. Tìm khoảng vân i.

       b. Tìm khoảng cách giữa vân sáng và vân tối kề nhau.

                        c. Tìm khoảng cách giữa hai vân sáng bậc 3.

Một người đứng gần chân núi hét to thì sau 1 s người đó nghe thấy tiếng vọng lại từ phía núi. Biết vận tốc sóng âm trong không khí bằng 340 m/s. Khoảng cách từ nơi người đó đứng đến chân núi bằng bao nhiêu?

Một loa phát thanh có công suất 1 W phát sóng cầu ra không gian. Tại điểm cách loa 1 m thì cường độ âm bằng bao nhiêu?