1/ It will be a flat.
2/ It will be in the Center of the city.
3/ Because the flat will be on the top floor and there won't be any neighbors.
4/ Yes, they will.
5/ There will be four rooms.

a: (P) đi qua O(0;0) nên y=ax^2

Thay y=3 và x=10 vào (P), ta được:

100*a=3

=>a=0,03

=>y=3/100x^2

b: x=99 thì y=3/100*99^2=294,03

292,5<294,03<295,5

=>Thỏa mãn

29. My father never lets the children splash around in the pool for a while yesterday

30. Their parents always let them buy some sweets and candies when going shopping

31. Trees are planted in the garden

32. Dinner is cooked in the kitchen.

1 B 

2 A

3 D

4 A

5 A

6 C

1 A

2 C

3 B

4 D

5 A

6 C

7 D

8 D

1 A

2 C

3 B

4 D

5 A

a và b có thể bằng 0 hoặc 5