1. The house is so expensice that they can't buy 
2. I have trouble learning English grammar
3. He took his umbrella because of the rain
4. My grandfather is too old to work hard
5. I wish he wouldn't absent from the class disscusion tomorrow
6. I wish I would travel to Dalta by train
7. => It took him 20 mns to type her lesson
    => He spend 20 mins typig her lesson
8. She is fond of wearing modern clothing at work
9. Doing this excersice is not easy
10. My father used to work for this company
11. 
12. Because Nga is sick today, she can't go to school 
13. It is such a difficult test that I can't do
14. It only take us 3 hours to fly from HCM to Sin
15. He enjoy travelling abroad