1. My sister likes watching TV.

2. No river in the world is longer than the Nile.

3. We might go to the moon for our summer holiday in 2050.

4. In the future, home robot will do all our homework.

5. If we don't save water, there will be a shortage of fresh water in a few decades.

6. If you stop talking, you'll understand the lesson.

7. I have never taked to a foreigner before.

8. Although Phong was sleepy, he still stayed up late to watch the end of game on TV.

9. If we don't try to save our resources of energy, it'll be soon end.

10. She enjoys living in the countryside.

11. Today VTV 3 has three interesting films.

12. Our garden has many flowers.

13. There are lots of beautiful lakes in Vietnam.

14. Ho Chi Minh city is the biggest city of three cities.

15. Because I have a bad cold, I didn't go to school yesterday.

16. Although Lan can sing well, she can't play the piano.

what is there in the bag?

1. is doing

2. is taking

3. is explaining

4. are having

5. am watching

6. aren't drinking

if you staying up too late, it'll make you sleep.

1. the kindest man

2. the fastest

3. the most famous actress

4. the most interesting film.

5. the worst mistake

5. those are Maths books in the back of the library.

1. luckier - luckiest

2. better - best

3. more dangerously - most dangerously.

4. colder - coldest

5. more important - most important

6. braver - bravest

7. faster - fastest

8. thinner - thinnest

9. earlier - earliest

10. more sucessfully - most sucessfully

11. worse - worst

12. further - furthest

13. realer - realest

14. unhappier - unhappiest

4. Minh hates going hiking at weekend.

6. Would you like to come to our house for dinner?

7. My favorite subject is Literature.

1. for

2. at

3. between

4. for

5. in

1. noisy

2. teeth

3. bakery

4. teacher

5. sailing

6. fifth

7. usually

8. student

9. children

10. nationality

1. to the supermarket on foot.

2. has many flowers.

3. to work by bicycle?

4. there twenty - five students in your class?

5. quarter to eight.

6. do these flowers cost?

A - B = (2017 x 2016 + 1009) - ( 2018 x 2016 - 1007)

A - B = 2017 x 2016 + 1009 - 2018 x 2016 + 1007

A - B = ( 2017 x 2016 - 2018 x 2016) + (1009 + 1007)

A - B = 2016 x ( 2017 - 2018) + 2016

A - B = 2016 x (-1) + 2016

A - B = (- 2016) + 2016

A - B = 0.