VI. Fill in each blank with a suitable preposition.

1. I first got hooked ………………. video games when I was eight.

2. The library allows you to check ………………. six books at a time.

3. Carpentry isn’t right ……..…. my street. I’d rather pay someone else to do it.

4. Could you help me look ………………. my contact lens?

5. What do you usually do ………………. your leisure time?

6. A lot of kids nowadays have become addicted ………..……. surfing the net.

7. We work ………………. volunteers for an animal protection organization.

8. He spends most of his free time looking ………………. the garden.

9. Today, teenagers rely ………………. technology more than in the past.

10. Surfing the Net too many hours can be harmful ………………. your health

V. Choose the correct answer a, b, c, or d.

1. How much time do you spend ………………. TV every day?

     a. watch                 b. to watch                c. watching                 d. in watching

2. I’d hate ………………. the exams, so I’m doing my best.

     a. failing                b. to fail                    c. fail                           d. failed

3. I always enjoy …………. to my grandfather. He always tells me great stories.

     a. to talk              b. to talking           c. talking                    d. talk

4. Could you help me ………………. the kitchen? It’s a real mess!

     a. tidy                  b. tidied                 c. tidying                   d. with tidying

5. Steven dislikes ………………., so he usually takes a bus to work.

     a. to drive            b. to be driven       c. be driven               d. driving

6. Jane prefers ………………. music than to listen to it.

     a. playing            b. play                    c. to play                 d. played

7. Marlene can’t wait ………………. to the beach again.

     a. to go                b. going                  c. for going              d. go

8. I really regret ………………. this computer - it’s useless.

     a. buy                     b. to buy                    c. buying                   d. for buying

9. Your child needs ………………. some weight. Tell him …… less junk food and take more exercise.

     a. to lose - eat         b. to lose - to eat       c. losing - to eat        d. losing - eat

10. I would love ………………. to your party! Thank you for inviting me.

     a. come                   b. coming                  c. to come                 d. came

IV. Complete the sentences with the to - infinitive or - ing form of the verbs in brackets.

1. I have enjoyed …………. (meet) you. Hope ……….…. (see) you again soon.

2. My father is not keen on coffee. He prefers ………………. (drink) tea.

3. I am a little busy. Would you mind ………………. (wait) a little longer?

4. Mobile games are great, but I don’t like ………..…. (play) them for too long.

5. If I can choose, I prefer …………. (stay) at home to …………. (play) sport.

6. Tonight I’d like ………………. (go) out, but I have to do my homework.

7. Sue loves ………………. (make) origami. She can fold some animals, birds and flowers.

8. I detested ………. (spend) two hours every day travelling to work and back.

9. He started ……..……. (surf) the net hours ago. Has he stopped ……………. (surf) yet?

10. I tried hard ………….. (concentrate), but my mind kept ….….…. (wander).

III. Complete the sentences with the correct form (to-infinitive or -ing form) of the verbs in the box. Some verbs can be followed by either a to-infinitive or an – ing form.

stay    make   watch    do    cycle    eat    hang out    travel    get    read

1. My brother loves ………………. live football on TV.

2. Do people in your country like ………………. abroad on vacation?

3. Riding a bike is Lan’s pleasure, but she detests ………………. in the rain.

4. I don’t mind ………………. at home to look after the children.

5. As a child, he hated ………………. books, but now he finds it enjoyable.

6. Minh is in good shape. He enjoys ………………. sport and exercise.

7. She doesn’t like ……..…. up early in the morning, especially at the weekend.

8. Emily dislikes ………………. crafts, but she enjoys origami.

9. I fancy ………………. out tonight because I’m too tired to cook.

10. Nancy adores ………………… with her best friend Helen.

II. Complete the sentences with the words in the box.

1. It is very …………. to lie on the beach, and listen to the sound of the waves.

2. That’s …….…. - I thought I’d left my keys on the table but they’re not there.

3. Many teens are ………………. on social networks like Facebook, Twitter and Instagram.

4. The website allows you to take a ………………. tour of the art gallery.

5. He was not ………………. with the camera, so he took it back to the store.

6. Bird-watching is an increasingly popular ………………. activity.

7. Hanging out with friends is ……………….. I really enjoy it.

8. Are you ………………. to Facebook, Twitter, Tumblr, or Instagram?

I. Write the correct “netlingo” abbreviation according to its meaning.

WF B4N S2U WBU T2UL EZ THX J4F FYI LOL NUFF DYLI GR8 BTW OMG 2nite

1. easy                         ……                 2. What about you? …….           

3. Same to you             ……....             4. Bye for now                             ……....

5. Talk to you later      ……....             6. Tonight                         ……....

7. By the way              ……....             8. for your information                 ……....

9. enough                     ……....             10. Do you love it?           ……....

11. Oh my God                        ……....             12. Great                           ……....

13. just for fun                        ……....             14. Thanks                        ……....

15. way fun                 ……....             16. Laughing Out Loud                 ……....

Cho C= x( x-1)(x-2)-(x^2 -2)(x+3)-4(x-1) . CMR: giá trị của C không phụ thuộc vào x

b) Cho B= (x-3y)(y-2x) –(x-y)(y-6x) . Tính giá trị của B khi x=-2; y=-1