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.