1.We stayed at the shelter till the storm passed.

2.As soon as they heard the crack sound, they ran out of the house last week.

3.We should finish cleaning the house before Mum gets home.

4.Don’t talk to the driver while he’s driving.

5.While they were surfing the Internet, we saw calls for joining a programme to save endangered species.

6.After the Earth Hour is over, we will have saved a lot of power.

7.A fire started as soon as the boys left the campsite.

8.You should make a shopping list before you go shopping.

9.The villagers didn’t have electricity until they installed a new generator.

10.Whenever you can, follow the three R’s to conserve natural resources.

Tổng số phần bằng nhau là : 2 + 3 + 6 = 11 (phần)

Giá trị của một phần là: 209 : 11 = 19

Số thứ nhất : 19 x 2 = 38.

Số thứ hai : 19 x 3 = 57.

Số thứ ba: 19 x 6 = 114.

1. As soon as I arrive at the station, I will call you.

2. While we were planting trees, our friends were collecting rubbish

3. Before they went on stage, the choir practised for half an hour.

4. When we have followed the steps, we make a conical hat.

5. Before my father bought one for me, he taught me how to use the computer

6. After I read my favourite book, I went to bed.

7. While Nick is reading a novel, Jack is reading a cartoon.

8. Whenever my sister makes a mess, my mum makes her weed the garden.

9. After the tornado hit, there were only a few houses left standing.

10. When the bell rang, everyone raced out of the classroom.

1.After he said goodbye to each of them, he left.

2.While I was cleaning out my cupboards, I found these photos.

3.As soon as I left him a message, he phoned me immediately.

4.After her graduation, she did voluntary work in a hospital.

5.I won't go until you tell me the truth.

1.I will call you right after I arrive at the station.

2.While we were planting trees, our friends were collecting rubbish.

3.Before the choir went on stage, they practised for half an hour.

4.When we follow the steps, we make a conical hat.

5.Before my father bought me a computer, he taught me how to use one.

6.After I read my favourite book, I went to bed.

7.While Nick is reading a novel, Jack is reading a cartoon.

8.Whenever my sister makes a mess, my mum makes her weed the garden.

9.After the tornado hit, there were only a few houses left standing.

10.When the bell rang, everyone raced out of the classroom.

1. The woman asked John if she might ask him a few questions.

2. The teacher asked me if I had done my project about space exploration.

3. Debbie asked her father if they would be able to live on Mars in 2050.

4. I asked the Browns if they were having a barbecue that night.

5. Jane asked Tom if he liked sci-fi films that featured extraterrestrial life.

6. Val asked me if scientists had found life on Mars many years ago.

7. Many people wondered if aliens or UFOs were real.

8. Sally asked her best friend if they could go to the National Museum the next day.

9. Duc asked Trang if she knew NASA had found two new planets.

10. She wanted to know if I had

been there the day before.

1. Jane asked me where we would live in 20 years time.

2. I asked Peter how his trip to Toronto had been.

3. Sue asked why Judy hadn’t waited for fireballs the night before.

4. The teacher asked us how many planets there were in the solar system.

5. Elliot wanted to know how many days it took to get to Mars from Earth.

6. I asked Sally what she was staring at.

7. Joe asked his teacher who had discovered the planet Neptune.

8. He asked the astronaut how long he had been living on the International Space Station.

9. The students wanted to know when humans would go to Venus

10. I asked Sally and Andy where they were

going that summer holiday.

1. Tim said that he had been there three months before.

2. He wanted to know when the next train left.

3. She asked me if I was meeting Judy at four o’clock that day

4. Jane told me that she had already seen that exhibition.

5. My mother asked who I had met at the party the night before.

6. Miki said that they were having dinner then, so they could only talk for a minute.

7. I asked Peter if I might use his phone.

8. The Prime Minister announced that public spending would be increased the following year.

9. Peter said that his father drank a cup of coffee every morning before going to work.

10. Cheryl asked the old woman how

long she had lived there.