Exercise 1: Give the correct tense of the verbs in brackets.

1. Why you (look)______ at me like that? I feel scared.

2. Is this the first or the second time you (be) _____ late for school?

3. I found this letter while I (look) ______ through these old papers.

4. Hurry up! She (be) _____ angry if we are late.

5. My brother (start) _____ collecting stamps 10 years ago.

Exercise 2: Finish each of the following sentences in such a way that it means exactly the same as the sentence printed before it

1. This is the first time I have eaten this kind of food.

=> I haven’t ………………………………………………………………………………

2. They built those plants 20 years ago.

=> Those plants ………………………………………………………………………….

3. They haven’t cleaned the streets for a week.

=> The streets ………………………………………………………………………………

4. The children couldn’t go swimming because the sea was rough.

=> The sea was too ………………………………………………………………………

5. That restaurant is so dirty that no one wants to eat there.

=> It is such ………………………………………………………………………………

Exercise 1: Complete the sentences with the question words.

what when where who

how how often how many how much

1. ____________does the first lesson begin? - At seven o’clock.

2. ____________are you going? - To the library.

3. ____________do you usually bring to school? - Textbooks, notebooks and pens.

4. ____________do you go to school? - By bike.

5. ____________is Mary talking to? - Mrs. Berry, her English teacher.

6. ____________is your favorite subject? - Maths.

7. ____________is your first day at school? - Oh, it’s great.

8. ____________does Phong do judo? - Three times a week.

9. ____________students are there in your class? - Forty.

10. ____________pocket money do you get? - Ten thousand dong.

Exercise 2: Rewrite these sentences, using must, mustn’t, should, shouldn’t.

Example: It’s not a good idea to swim immediately after a meal.

=> You shouldn’t swim immediately after a meal.

1. It’s really important to take this medicine three times a day.

You ________________________________________________________________

2. It’s a good idea to listen to the weather forecast before going camping.

You ________________________________________________________________

3. It’s a good for you to take exercise every day.

You ________________________________________________________________

4. It’s not good to eat lots of sweets.

You ________________________________________________________________

5. It’s against the rules to use your mobile phone in class.

You _______________________________________________________________

Give the correct form of verbs :

1. If I meet him, I (tell) _____ him to come to see you immediately.

2. If he (have) _____ the money, he could afford a new car.

3. If I were you, I (go) _____ to that seminar for more expertise.

4. You (do) _____ everything more perfectly if you listen to what I say.

5. If he (win) _____ the contest this time, he (be) _____ very rich.

6. If she (work) _____ lazily, she would be tired.

Từ công thức \(R=\frac{U}{I}\) hãy cho biết khi thay đổi hiệu điện thế U thì điện trở R có thay đổi không? Vì sao?