1. If we pollute the water, we………………………..no fresh water to use. (have)

2. I suggest………………………..English in class. (speak)

3. If the rice paddies are polluted, the rice plants………………………….(die)

4. What about………………………used paper, bottles and cans everyday? (collect)

5. I fell over while I ………………………basketball. (play)

6. I look forward to………………………from you (hear)

7. How can we prevent……………………….? (litter)

8. The plastic bags are very hard………………………….(dissolve)

9. …………………….trash will pollute the air. (burn)

10. Raw sewage is…………………………directly into the sea. (pump)

Put the verbs in the correct tenses

1.      If we (pollute) ................................ the water, we will have no water to use.

2.      If we cut down trees in the forest, there (be)........................  big flood every year.

3.      If he (not pass) .......................... the driving test, we(be) ...................................disappointed.

4.      I (not write) ............................ to you if you (not send) ............................... me your address.

5.      The sea (get) ......................... warmer if the earth (get) ................................warmer.

6.      If we (not protect) .............................. the animals, they (kill)...........................

7.      If Jane (not apologize) ........................... to us, we (not speak) ................................... to her.

8.      If people (stop) ................................ using dynamite for fishing, a lot of sea creatures ( be) ................................ well preserved.

9.      If he (study) ................................. hard, he could not fail the exam.

10.What …………. you ……….. if you ………….. in my position? (do/be)

11. We will go for a picnic if the weather (be) ................................ fine tomorrow.

12. If I were you,  I (travel) ....................................  around the world .

13. If there were flying saucers, there  (be) ...................................  traces of their landing.

14. Unless it (rain)....................................... , they  will go shopping.

15. I would take photos of UFOs if I (see) .......................................... them

II.Give the correct form/tense of the verbs in blankets.

1." What about (go) ..................to the countryside this weekend?'

"That's a good idea."

2.If we pollute the water, we(not have)..................fresh water to use.

3.Who you (talk).....................on the phone when I came to meet you yesterday?

4.She didn't have enough time (visit)......................all the tnteresting places.

I . put the verbs in brackets into the correct form

1. If we ( recycly ) ............ more , we will help the Earth

2. Factories ( not dump ) ............. waste into rivers if the government fine them heavily

3. If people travel to work by bus , there ( he ) ................ fewer ear fumes

4. We ( save ) ............... thousands of trees if we don't waste paper

5. If we use water carefully , more people ( have ) .............. fresh water

6. If the factory ( continue ) ................. dumping poison into the lake all the fish and other aquatic animals will die

I. Fill in the blank with the correct form of the word

1. What is the correct .............. of this word (pronounce)

2. Last week we have an ........... summer holiday ( enjoy)

3. The ............ of the project made me tense ( important)

4. You had better do some........... for the final exam ( revise)

5. ....................., her illness was more serious than we thought ( fortunate)

II. Fill in each gap with a suitable word to complete th following passage

Rivers are one of the world's most important natural resources . Many cities are on the large rivers, and (1)......... every country has a least one river that (2)............. an important part in the lives of its people . Beside transportation, rivers (3).......... water for crops, water to drink , and re creation for people who live along their (4).............. And in (5)............ to get water for crops , engineers sometimes build a dam (6) a river and let water become a lake behind the dam . Then people can use their water not (7)........ irrigate fields but also to make eletricity for homes and industries. (8)........ the water often becomes polluted when cities river bank grow (9) ............ and the number of industries increases. We are learning that it is necessary to (10) ....... rivers clean if we want to enjoy the benefits of the natural resources.