Đáp án là: A ⇒ make.

into - dangerous - chemicals - of - let - sure - with - fire

You must put all (1) ___chemicals______ and drugs in locked cupboards. You must not (2) ___let____ children play in the kitchen. The kitchen is a (3) ____dangerous___ place. You have to make (4) _____sure____ children do not play (5) ___with_____ matches. Remember, it only takes one match to cause a (6)__fire_____ .You must cover electrical sockets so that children do not try to put anything (7) _____into_____ them .Electricity can kill .You have to keep all dangerous object out (8)_____of______ children's reach.

D => must not

A => tell

A => don't have to

chew => chewing

C -> many generations

1.We have a lot of work tomorrow .You must be late!

2.You mustn’t to tell anyone what I just told you. It’s a secret.

3. We have to rush. We’ve got plenty of time.

4.When chew food, we shouldn’t talk.

5. My family has followed this tradition for many generation. - It’s good .

1. D  mustn't 

2. A  tell

3. A  don't have to

4. B  chewing

5. C  generations

find and correct mistakes

1. It's the second time they have visited us

2. The girl is not enough tall=> tall enough to touch the top of the shefl

3. I am going to playing=> play chess with my friend tonight

4 . We last saw them since=> ưhen they had birthday party

5. You have to making => makesure children don't put anything into the electrical sockets

6. Nam drew the picture hisself=> himself because his sister didn't help him

7. He worked with people who could nether speak and=> nor hear

8. They have staretd living in the city since 1990

find and correct mistakes

1. It's the second time they visited->have visited us

2. The girl is not enough tall->tall enough to touch the top of the shefl

3. I am going to playing->play chess with my friend tonight

4 . We last saw them since ->when they had birthday party

5. You have to making->make sure children don't put anything into the electrical sockets

6. Nam drew the picture hisself->himself because his sister didn't help him

7. He worked with people who could neither->neither could speak and hear

8. They staretd living in the city since->in 1990

Put each verb in brackets into the most appropriate future time form.

1. I (not do) ……won't do………………………anything tonight.

2. We (fly) ………will fly……………………, but we decide to drive instead.

3. I don’t think you (have) ……will have………………………any problems at the airport.

4. George (not be) ……won't be………………………back until six. Can I take a message?

5. Ann, I am going to the store. (you come) ………Will you come……………………with me?

6. We (have) ……will have………………………a party next Saturday. Would you like to come?

7. All the hotels are full. Where (we spend) ……will we spend………………………the night?

8. What (you buy) …will you buy…………………………with the money you won in the lottery?

9. Can you come on Monday afternoon? – Sorry, but I (play) …will play…………………………volleyball.

10. Can you answer the phone for me? I (lie down) …will lie down…………………………for a while.

III. Find out one error/mistake (from A, B, C, or D) in each sentence below.(1.0pt)

1.By the time we got to the cinema, the film started => had started

    A                       B       C                                   D

2.If you are => were the president, what would you do to help the environment?

                A                           B                      C                            D

3.I prefer to do => doing a nine-to-five job to working shifts.

                   A              B                C      D

4.He asked me what => if I preferred video conferencing to face-to-face meetings.

            A             B            C                                       D

5.Teenagers often use abbreviations when text => texting .

          A                   B            C                      D

23. to-> X

24. don't-> doesn't

25. beautifuler-> beautiful

26. Did-> does

23. We might to have robots to cook our meals.  => bỏ to
                A       B                      C                D
24. She don’t like writing the letter. =>doesn't
         A          B         C               D
25. Trang An is one of the most beautifuler places in Quang Ninh. =>beatiful
                      A                     B            C          D

26. Did your uncle take you to watch the football match at week? => Does

        A                       B            C                          D

23. to=> X

24. don't=> doesn't

25. beautifuler=> beautiful

1don't=>doesn't

2walk=>are walking

3season=>seasons

4cold=>hot

5much=>many

1.mistake :don't

   correct =>doesn't

2. mistake : walk 

  correct =>are walking

3. mistake :season

correct =>seasons

4.mistake: cold

correct =>hot

5.mistake: much

correct =>many