1.      Miss Blake is a __________ from Friends of the Earth.

A. representative                B. representation          C. represent                 D. representer

2.      We are delighted __________ you passed the final exam.

A. so                                  B. that                          C. recycled                  D. with

3.      Every milk bottle can be __________ thirty times.

A. reduced                         B. reused                     C. recycled                  D. returned

4.      Dead leaves fall to the ground and __________ very quickly in wet weather.

A. compost                        B. compose                  C. decompose              D. composition

5.      Farmers collect household and garden waste to make __________ .

A. glassware                      B. garbage                    C. compost                  D. grain products

6.      Are you interested __________ protecting the environment?

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

7.      Don’t throw things __________, try to find another use __________ them.

A. of / for                          B. off / on                    C. off / for                   D. away / for

. He will grow a lot of trees in this garden.

–> a lot of trees in this garden is growed by he .

 3. He closes the book.

 4. My teacher asked me many difficult questions.

5. She advises me to study hard.

 6. My brother is painting the kitchen light blue.

Change into Passive

7. They are going to paint the tables.

8. My sister sends the letter to Quang Ngai by train.

9. My mother irons the clothes every day.

10. My father repairs this machine.

Change into Passive

1. She has canceled the meeting.

6. My father turns on the television because she wants to see the news. ( in order…) ………………………………………………………………………………. 7. We hurried to school because We didn’t want to be late. ( in order…) ……………………………………………………………………………..

8. Please arrive early because we want to be able to start the meeting on time. (so that) …………………………………………………………………………….

9. She’s stayed in USA for six months. She can perfect her English. (so that) …………………………………………………………………………..

10. Send the letter express. He’ll get it before Tuesday. (so that) …………………………………………………………………………….

11. He promises not to tell lies. He promises he………………………………………………………………

12. Nam promises to study harder. Nam promises he …………………………………………………………….

2. She tries her best to study Math. She want to pass the final exam. (so as…) …………………………………………………………………. 3. He always drives carefully because he doesn’t want to cause accidents. (so as…) ………………………………………………………………………………. 4. You should practise English every day. You can improve it rapidly. (in order …) ………………………………………………………………………….. 5. We turn off the lights. We don’t want to waste electricity. ( so as …) ……………………………………………………………………………..

Bài 3: Đốt cháy hoàn toàn 7,2g kim loại Magnesium (Mg).

a. Viết phương trình?

b. Tính thể tích của khí oxygen đã tham gia phản ứng.

c. Tính khối lượng của sản phẩm thu được.

Mg = 24, O = 16.

Bài 2: Đốt cháy hoàn toàn 9,2g Sodium (Na)

a. Viết phương trình?

b. Tính thể tích của khí oxygen đã tham gia phản ứng.

c. Tính khối lượng của sản phẩm thu được.

Na = 23, O = 16.

Bài 1: Hoàn thành các phản ứng sau:

1. Na + O2 ---- > ………                   6. K + O2 ---- > ………

2. Ca + O2 ---- > ………                 7. Ba + O2 ---- > ………

3. Mg + O2 ---- > ………                8. Zn + O2 ---- > ………

4. Al + O2 ---- > ………                  9. ? + ? ---- > Fe3O4

5. ? + ? ---- > H2O                        10. ? + ? ---- > SO2