1. Don’t be careless or you will fall over the rocks.

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2. Burn the trash and the air will be polluted.

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1. Tom never throws trash………………….the hedge (of / over / on / in)

2. Last night it rained so………………….(heavy / heaviness / heaving / heavily)

3. The air is polluted…………………the factories produce a lot of smoke. (and / so / since / but)

1. Many people are concerned about the pollution of the (environmental)……………………………….

2. Some ………………………………..groups have declared a boycott of tourisim on the island (environment)

3. ……………………air can cause illness and even health. (pollute)

4. She will have to learn to behave more .......................  ( proper )

5. ............................do your exercises , you will fail the exam.( if / unless/ as long as / provied that )

1. Many people are concerned about the pollution of the (environmental)……………………………….

2. Some ………………………………..groups have declared a boycott of tourisim on the island (environment)

3. ……………………air can cause illness and even health. (pollute)

4. She will have to learn to behave more .......................  ( proper )

5. ............................do your exercises , you will fail the exam.( if / unless/ as long as / provied that )

6. Jackson canceled the concert, to the great………………………………of his fans. (disappointed)

7. Customers made a formal……………………………….letter about the way they were treated. (complain)

8. If ……………………..continues, there will be no forest left ten years from now. (forest)

9. George will lend you any money ................. you promise to pay him back. ( as long as / as long as / as much as / as well as )

10. ………………………….are interested in the protection of the environment. (conserve)

1. It was raining, so we decided to postpone our camping.

@ Since

2. She wants them to sing a song.

@ She suggests they

3. She couldn’t join us because she was busy.

@ She was busy, so  . Shall we go to the cinema tonight?

@ What about  

4. Why don’t we use energy-saving bulbs?

@ I suggest  

5. Although she was not beautiful, she took part in a beauty contest.

@ She wasn’t beautiful but  

6. Work hard and you will pass the exam.

@ If you

7. If you don’t start working hard now, you won’t be able to pass the final exam.

@ Unless  

8. We are delighted. You passed your English exam.

@ We are delighted  .

9. She was tired and therefore she wanted to go home.

@ She wanted to go home because  

1. Mai can’t go to the movies with us tonight. She will have to ________her little sister.

2. If we ________wasting water, there will be a shortage of fresh water in a few decades.

3.  “________the TV, will you? I want to watch the weather forecast.”

4.  “I think I’ve lost my new pen. I’ve ________it everywhere.

5. Mrs. Yen forgot to ________the faucets when she left home for work.

6. I am ________hearing from you.

7. Never ________till tomorrow what you can do today.

1. She is very tired; ________, she has to finish her homework.

A. moreover B. so C. and D. however

2. - Is he an actor ________a singer? - An actor

A. and B. or C. with D. so

3. He was tired, ________he took a rest before continuing the work.

A. so B. and C. but D. if

4. Who looks ________your children when you are away from home?

A. for B. at C. after D. to

5. Why doesn’t she go ________with her university study?

A. in B. at C. to D. on

6. After coming home, she cleaned the floor ________cooked dinner.

A. but B. however C. moreover D. and

7. They didn’t understand the matter ________she didn’t ask for help.

A. but B. however C. moreover D. and

8. How about ________posters on energy saving and hanging them around our school?

A. make B. making C. to make D. to making

1. In order to save electricity, an ordinary 100-watt light bulb can be replaced by a(n) ________.

A. energy-saving bulb B. energy-save bulb C. saving energy bulb D. save-energy bulb

2. You should get a (n)________to make sure there are no cracks in the pipes.

A. plumber B. mechanic C. electrician D. consumer

3. ________you take the train instead of the bus? It’s faster and cheaper.

A. Why not B. Why don’t C. How about D. Let’s

4. If we ________less paper, we ________the number of trees in the forests.

A. used/ will save B. use/ can save C. can use/ save D. use/ can

5. She won’t take all the suitcases ________she likes to travel light.

A. so B. but C. because D. therefore

1. I suggest ________________some money.  (collect)

2. What about ________________a shower instead of a bath to save energy. (take)

3. I think we should ________________off the faucets. (turn)

4. If we plant more trees along the streets, we ________________more shade and fresh air. (have)

5. If the pollution _____________on, the world will end up like a second-hand junk-yard. (go)