I. viết lại câu thành câu chủ ngữ giả

1. It is thought that he has learned English for ten year . 

a. He . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

b. People . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. It is said that Messi is the best soccer player.

Messi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. It is said that she can speak 5 English .

She . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

4. It is believed that she has a lot of money

She . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

5. People think that the motobike was stolen by a stange man.

The motobike . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

6. It is reported that the is an accident in the city.

People . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

8. It is said that Me Kong river is the longest in vietnam.

Me Kong River . . . . . . . . . . . . . . .  .. . . . . . . . . . . . . . . . . 

9. People said that Lan is the best student in her school. 

Lan . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

10. It is said that English is spoken all over the world .

English . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . .  .

 The search for afternative resources of energry has resulted in various directions . Many communities are burning garbage and other biological waste products to produce electricity . Changing waste into gases or oil is also efficient way to dispose of waste .Experimental work being done to make synthetic fuels from coal , or coal tars . But to date that process has proved expensive . Other experiments are underway to harness power with gaint windmills . Geothermal power heat from the earth is also being tested . 

  Some experts are trying to revive hydroelectric power which is derived from streams and river . Fifty years ago , hydoelectric power provided one third of electricity used in the United States , but today it supplies only four percent . The oceans are another source of energy . Scientists are studying ways the change the energy of ocean currents tides , and warves into electricity . Experiment are also underway to make use of temperature diferences in ocean water to produce energy .

1. What are many communities doing to produce electricity ?

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . .

2.Has the process of making synthetic puels from coal or coal tars proved cheap?

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

3. where is hydoelectricity power derived from ?

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

4. what percentage of the electricity used in the USA does hydoelectric power provide today ?

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. Are warves from the oceans used to make electricity ?

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . .

tặng cái đấm vào mặt vì dám ăn nói linh tinh

số bạn nữ là 35 -15 =20(bạn)

               đ/s:20 bạn

public buildings nghĩa là gì

 nếu em là nam em sẽ dẫn bà cụ qua đường

hi !