* Rewrite the sentences belowwithout changing their meaning.   

41. We make the air dirty because we use the car all the time. (Conditional type 1)

 If………………………………………………………………………………………….

42. Nobody in our class is shorter than Toan.

 Toan is ……………… ………………………………………… ………………………

43. Lan has learned English for 5 years  .

 Lan began……………………………………

44. I like reading books . I don’t like watching films.(Using “and, but, or, so” to combine)

 I like …………………………………………………………………………………….. 

45. You mustn’t swim in that polluted lake, boys.

 Don’t…………………………………………………………………………………….

* Write complete sentences using the clues given.   

46. My future house /might/ on/ the Moon .

.………………………………………………………………………………….…………

47. I/ see/ that movie/ last year.

… ………………………………………………………………………………………

48. not / talk/ during/  meeting.

……………………………………………………………………………………………

49. If / we/ recycle/ more, / we/ save/ a lot/ materials.

……………………………………………………………………………………………

50. The Nile/ long/ river/ in/ world.

……………………………………………………………………………………………

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Read the passage and answer the questions below:

Air pollution is a serious problem in many cities. Wastes of motor vehicles, factories and other sources create so much air pollution that it may hang in the air like dirty fog. Air pollution threatens the health of the people who live in cities. City wastes cause water pollution when they are poured into the waterways. These wastes kill fish and make some areas unfit for swimming. In addition, many large cities have difficulties in disposing of their garbage. The amount of garbage grows each year, but places to put it are quickly filling up. Citizens, governments, industries, scientists, and business people must work together in different ways to gradually reduce pollution. For example, most cities have introduced recycling programmes.

1. What can be created from wastes of motor vehicles, factories and other sources ?

.......…………………………………………………………………………………………………………….

2. Can air pollution influence badly on people who live around it ?

.......…………………………………………………………………………………………………………….

3. When do city wastes pollute water ?

.......…………………………………………………………………………………………………………….

4. Why is it difficult to have places for putting garbage ?

.......…………………………………………………………………………………………………………….

5. What must all people do to reduce pollution ?

....………………………………………………………………………………………………………

III. Rewrite sentences by combining two sentences into one sentence and using suggested clues:

1. The air is so dirty. I sneeze so much. ​CONDITIONAL SENTENCE TYPE 2

____________________________________________________________________________

2. Their children have birth defects. The parents were exposed to radiation.​BECAUSE

____________________________________________________________________________

3. The air pollution causes breathing problems.​LEADS

I. Rewrite these sentences as directed in the brackets.

1. He was lazy, so he got a bad mark.(Rewrite this sentences with "because")

->.............

2. It rained hard yesterday. I went to school on time. ( Combine these sentences with "although")

->....................

3. We make the air dirty because we use the car all the time. ( Rewrite this sentences with "If")

->..........................

4. the/ Sydney/ city/ is/ cleanest/ world/ the/ in. ( Rearrange the worlds to make a sentence)

->.........................

Choose the letter A, B, C or D to answer these following questions

People need to breathe. If they don’t breathe, they will die. But how clean is the air people breathe? If they breathe dirty air, they will have breathing problems. Plants and animals need fresh air too. A lot of the things in our lives create harmful gases and make the air dirty, like cars, motorbikes, and factories. Dirty air is called polluted air. Air pollution can also make our Earth warmer.

Question: What is the other name of dirty air?

A. Polluting air

B. Pure air

C. Breathless air

D. Polluted air