61. My teacher wasn't at home when I ( arrive ) .......arrive..........He ( just go ) .....has just gone....out.
62. My father ( not smoke ) ........hasn't smoken.......for 5 years.
63.I ( lose ) .......lost.....my key . Can you help me look for it ?
64. Birds ( build )....build.....their nests in the summer and ( fly ).....fly...... to the south in winter.
65. I'm busy at the moment . I ( redecorate ) .......am redecorating........ the sitting room.

4+x-27=-x+9

4+x+x=27+9

4+2x=36

2x=32

x=16

2+x-13=7-9

2+x=-2+13

2+x=11

x=11-2

x=9

Bội của 720 là  720.k  với k thuộc N

II. Rewrite the sentence :

1. Minh is taller than Nam

=>Nam is shorter than Minh.

2. Nobody in the class is as tall as Huy

=> Huy is the tallest body in the class.

3. Jane cooks better than her sister

=>Jane's sister cooks worse than Jane.

4. Tom is the best football player in the team.

=> Nobody in this team play better than Tom.

5. Jack is younger than he looks

=> Jack isn't elder than he looks.

6. I don't spend as much money as you.

=> You don't spend as less as me

7. Nothing is faster than the speed of night.

=> the speed of night is the fastest thing

1. Since her..arrived.. the room has been full of laughter (arrive)

2. I went to the ....grocery..... store to buy something (groce)

3. The ..growing.. of trees occurs very slowly (grow)

4. Her partents are ...separated. , but not divorced (separate)

5. I go hil- waking for .relaxing... (relax)

6. She spent a .relaxation.. evening with friend (relax)

bạn chứng minh cả góc đó = 180 độ là ok

My favorite movie is cartoon “Tom and Jerry”. Tom is a cat with blue and white color. He keeps the house for a normal family and has a very free life. His job is chasing Jerry day by day. Jerry is a brown house mouse. He usually lives in the deep cave behind the wall. Although they hate each other so much and always find ways to hurt opponent but when Tom or Jerry falls into really dangerous situations, then both become another savior. The film is an endless confrontation between Tom and Jerry, bring plenty of laughter for the audiences. I love this film because when I watch it I feel very glad, feeling like returned to childhood.

S + wish (s/es ) + S + V- ( ed/bất qui tắc ) + ....