6.   Mr. Buong is admired since he dedicates all his life to protecting environment. (since)

      .................................................................................................................

7.   When you give me a ring, you’ll hear some news. (when)

      .................................................................................................................

8.    I’ll do my homework after the TV program ends (after)

      .................................................................................................................

9.   I’ll have a bath before I go to work (before)

      .................................................................................................................

10.  She’ll visit friends while she is in Paris (while)

      .................................................................................................................

 37. We cannot swim in this part of the river because the water is highly polluted. 

38. Mr. Minh has been admired since he dedicated all his life to protecting environment.

39. Lan was sick so she didn't go to school 

??? 40.A lot of Viet Namese people have the custom to buy sugar cane on New Year's Eve 

37. We cannot swim in this part of the river because the water is highly polluted.

Ex1: Combine the sentences to complete the sentences, using the words in brackets

1. The building is very old.He lives there (where)

Where he lives is an old building

2. I'll tell you something. You didn't know it before (which)

I'll tell you something which you didn't know before

3. Mr. Minh is admired. He dedicates all his life to protecting enviroment. (since)

Mr. Minh has been admired since he dedicates all his life to protecting enviroment.

4. Give me a ring. You'll hear some news. (when)

When youwant to hear some news, give me a ring

5. She'll in Paris. She'll visit friends. (while)

She'll visit friends while she is in Paris

1. The building is very old.He lives there (where)
=> The building where he lives is very old.

2. I' ll tell you something. You didn't know it before (which)
=> I' ll tell you something which you didn't know before.

3. Mr. Minh is admired. He dedicates all his life to protecting enviroment. (since)
=> Mr. Minh is admired since he dedicates all his life to protecting enviroment.

4. Give me a ring. You' ll hear some news. (when)
=> When you give me a ring, you' ll hear some news.

5. She' ll in Paris. She' ll visit friends. (while)
=> She' ll visit friends while she is in Paris.

Ex1: Combine the sentences to complete the sentences, using the words in brackets

1. The building is very old.He lives there (where)

Where he lives is an old building

2. I'll tell you something. You didn't know it before (which)

I'll tell you something which you didn't know before

3. Mr. Minh is admired. He dedicates all his life to protecting enviroment. (since)

Mr. Minh has been admired since he dedicates all his life to protecting enviroment.

4. Give me a ring. You'll hear some news. (when)

When youwant to hear some news, give me a ring

5. She'll in Paris. She'll visit friends. (while)

She'll visit friends while she is in Paris

1.Before I'll go to work.I'll have a bath.

2.She's in Paris while she'll visit friends.

3.Because the water is highly polluted,we can not swim in this part of the river.

5.When give me a ring,you'll hear some news.

6.After the TV program will end,I'll do my homework.

I. Combine two sentences, using ''because/ since/ as''.

1. The water is highly polluted. We cannot swim in this part of the river. ->..........because ( since / as ) .the water is highly polluted, we cannot swim in this part of the river......

2. The company does not produce recycled paper. It is more expensive to produce than regular paper. ->..............The company does not produce recycled paper because it is more expensive to produce than regular paper. .........

3. We want people to be aware of the problem of pollution. We have'' a green week'' three times a year. ->.......because we want people to be aware of the problem of pollution, We have'' a green week'' three times a year. ..................

4 The area around the beach is full of trash. No one wants to go swimming or sunbathing there. ->...........since the area around the beach is full of trash, No one wants to go swimming or sunbathing there. ....................

5. It started to rain. We could not keep on cleaning the beach. ->........as it started to rain, we could not keep on cleaning the beach. -..........................

6.Mr. Minh is admired. He dedicated all his life protecting environment. ->........................Mr. Minh is admired because He dedicated all his life protecting environment...........

II. Rewrite each sentences so that the meaning stays the same:

1. Shall I phone you this evening? -> Do you want.............me to phone you this evening ?..........................

2. I can do what I want and you can't stop me. -> You can't..........prevent me from doing what i want...................

3 I would like you to help me to put the chairs away. -> Do you mind.........helping me put the chairs away ?...................

4. It's not a good idea to travel during the rush hour. -> It's better to avoid.................travelling during rush hour.....................

5. I'd refer not to go out tonight. -> I'd rather.........not go out tonight..............................

Man is a unique being. He is different from all other creatures because he does not merely take part in the environment. Man reshapes his environment (41)  (at / by / from / for) will to some purposes. He does not have a (42)  (reliable / natural / primitive / permanent) habitat and is able to adapt himself to living in different environments. Among the many ways in which Man has changed his environment (43)  (has / have / is / are) the building of cities and roads and the utilization of (44)  (field / land / ground / soil) for extremely harmful purposes to the environment.

An example of a harmful result of Man’s actions is that of pollution. Through the use of scientific knowledge and (45)  (advanced / advantaged / promoted / heightened) technology. Man has (46)  (increased / lengthened / enlarged / promoted) his well-being and life expectancy in the process; however, he has also (47)  (come / seen / heard / brought) about the growing problem of worldwide pollution. One of the main sources of air pollution is motor vehicles. Fumes emitted from the car (48)  (waste / exhaust / garbage / trash) contain many chemicals which are harmful to people, animals, and plants. Industry also (49)  (contributes / devotes / looked forward / adjusts) significantly to the pollution of the atmosphere. There is no major city in the world today in which we can enjoy clean air.

It is important for us to be environment-conscious and (50)  (deny / escape / refuse / avoid) actions which cause harmful effects to our environment.

Adverb clause of reason (as, because, since, because of)

1 He left school because his life was hard.

-> His life was hard, so he left school

2 The children are going swimming a lot because the weather is hot.

-> The weather is hot so the children are going swimming

3 He couldn't go to school because he was very poor.

-> He was very poor so he couldn't go to school

3 câu này đều cần dùng đến ''so'' mà trong đề không có ''so'' nên chị làm như này nhé!

1. Because of his hard life, he left school

2. Because of the hot weather, the children are going swimming.

3. Because of his poverty, he couldn't go to school 

Đáp án C