1/ Mum doesn't want to see that western film. She saw it last night. (already)
Mum has seen that western film last night already.

Đây bạn!!!
I’m not going to study the irregular verbs any more. I’ve learnt them.(already)
I have learnt to study the irregular verbs already.

Đây bạn!!!
   (x-7).(4x-5)-(2x-7)²
= 4x²-33x+35-(4x²-28x+49)
= 4x²-33x+35-4x²+28x-49
= -5x-14

Đây bạn!!
13. You are under no _________ to buy any stuff here.
A. oblige     B. obliged     C. obligatory     D. obligation
14. Taking care of the family is _________ considered women’s duty in many Eastern countries.
A. tradition     B. traditional     C. traditionally     D. traditionalism
15. In Maori culture, it’s the _________ for people to press their noses when it comes to greeting.
A. custom     B. customary     C. customer     D. customize
16. At the end of the semester, students are required to write a _________ on what they have learned and what can be improved.
A. reflect     B. reflection     C. reflective     D. reflector
17.  Linda fell in love with Peter without knowing about his real ________status.
A. social     B. socialable     C. society     D. socialability
18 .After the meal, he left the waitress with a large ___________.
A. money     B. cash     C. tip     D. payment
19. A ____ of belonging simply means the acceptance to become a natural member of something.
A. feel     B. sense     C. sight     D. taste
20.Whether you have meals at home or in a restaurant, some basic table __________ should never be forgotten.
A. ways     B. styles     C. aspects     D. manners
21. _________ to some Western cultures, children leave teeth under their pillow for the tooth fairy to collect – usually in return for some money.
A. According     B. Owing     C. Basing     D. Depending
22. Several ________ games such as rope skipping or Tohe making are introduced at the walking street at weekends.
A. folk     B. past     C. childish     D. childlike
23. Using computers too much may have harmful effects  _________ your minds and bodies.
A. on     B. to     C. with     D. onto
24. In 2010, Ha Noi………its 1,000^th anniversary.
A.commemorated     B. celebrated     C.worshiped     D.remembered
25.When the ….............arrives at the Cham Tower, the dancers perform a welcome dance in front of the tower.
A.procession     B. crowd     C. parade     D. dancer
26. I had to wear  _________ uniform when I worked in the hotel.
A. a     B. some     C. any     D.an
27. We were working hard __________ Jack and Jerry were enjoying the sunshine on the beach now.
A. while     B. instead     C. but     D. therefore
28. __________ hard the teacher tried to explain, I couldn’t understand a word of it.
A. While     B. However     C. Otherwise     D. If
29. My neighbor _________ to complain while I ________ the drum last night.
A. came – played             B. was coming – was playing
C. came – was playing     D. was reading – was played
30. I saw that Susan _________ a books as I _________past the window.
A. was reading – walked     C. was coming – was playing
B. read – was walking         D. was reading – was walking
31. We quickly ran to the house because it ________ heavily.
A. rain     B. rained     C. was raining     D. rains
32. _______the Mongols were very powerful, Tran Quoc Tuan defeated them three times during the 13^th century.
A. Because     B. If     C. Although     D. However
33. Once ___________ a time, three lived a ferocious lion in the forest.
A. in     B. upon     C. of     D. off
34. In Maori culture, it’s the _________ for people to press their noses when it comes to greeting.
A. custom     B. customary     C. customer     D. customize
35. The house was destroyed in the fire, _________ fortunately, the whole family was saved.
A. and     B. however     C. but     D. so
36. Jill should show up on time, __________, he can’t enter.
A. however     B. otherwise     C. even though     D. nevertheless
37 We should be careful not to break anything during Tet holiday _________ it is believed to bring bad luck.
A. because     B. yet     C. so     D. nonetheless
38. The Lao are one of ________ many Thai – speaking peoples.
A. the     B. a     C. an     D. A and C
39. When you rang, I _________ out.
A. went     B. used to go     C. was going     D. go
40. When I was at the former company, we _________ training every Friday for 2 hours.
A. having     B. used to have     C. were having     D. have

2. We usually lit our houses with candles.
--> We used ______________________.

(x-2)²+2.(x-1).(x+1)+(x+2)²
= x²-4x+4+2x²-2.(x+1)+x²+4x+4
= 4x²+6

B