7. Choose the letter A, B, C or D to indicate the underlined words that need correction.

1. B. needn't=> mustn't

needn't: không cần

mustn't: không được

Đáp án B sai nghĩa

2. A.needn't=> mustn't

needn't: không cần

mustn't: không được

Đáp án A sai nghĩa

3. C. mustn't=> needn't

needn't: không cần

mustn't: không được

Đáp án C sai nghĩa

4. C. discriminate=> discrimination

discriminate(v): phân biệt đối xử

discrimination(n) sự phân biệt đối xử

Đáp án C sai về từ loại

5. B. take=> be taken 

Đây là câu bị động

8. Rewrite the sentences in passive voice.

1. The rule may be forgotten quickly by you.

May + V → May + be + V3/V-ed.

2. The lesson should be studied repeatedly by you.

Should + V → Should + be + V3/V-ed. 

3. The competition must be won by my brother.

Must + V → Must + be + V3/V-ed.

4. The match should be canceled.

Should + V → Should + be + V3/V-ed. 

5. She can't be persuaded by the teacher.

Can + V → Can + be + V3/V-ed.

6. My car needs to be repaired,

Need+ V-> Need+ to+ be+V3/V-ed.

7. By whom should the damage be paid?

Who+should+V=> By whom+ should+ S+V3/V-ed.

9. Rewrite the sentences so that they mean the same using the word given.

1. It's not necessary for you to do the test

-> You don't have to do the test .

It's not necessary for sb to do sth= Sb don't have to/ don't need to do sth

2. They will catch all the prisoners again tonight.

=> All the prisoners will be caught again tonight.

will V => will be V3/V-ed.

3. We haven't cleaned the street this week.

=>The street has not been cleaned this week.

haven't V3/V-ed=> haven't been V3/V-ed.

4. She could repair the broken vase.

=> The broken vase could be repaired by her.

Could + V → Could + be + V3/V-ed. 

5. It is essential that no one is told about our plans

-> You shouldn't tell someone about our plans

It is essential that: nó cần thiết rằng

6. It was wrong of you not to call the doctor at once

-> You should have called the doctor at once.

should have V3/V-ed: đã không làm gì trong quá khứ trong khi điều đó nên làm

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