3,45x0,99+3,45:100+3,45x99

=3,45 x (0,99 + 99) + 3,45 : 100
=3,45 x 0 + 0.0345
= 0.0345
Chúc em học tốt ^^

27.A

28.C

29.D

30.A

Chúc em học tốt ^^

a, Con hơn cha(CN) / là nhà có phúc(VN) .

b, Dưới ánh trăng(TN) , dòng sông(CN1) / sáng rực lên(VN1), những con sóng nhỏ(CN2) / võ nhẹ vào hai bên bờ cát(VN2).

c, hoa lá, quả chín, những nấm ẩm ướt và con suối thầm dưới(CN) / chân đua nhau tỏa mùi thơm(VN).

là 2/1000 nhé. Chúc em học tốt ^^

16.She cannot answer your question because you speak too fast.

17.The story was funny but no one laughed. 

18.Fruit juice is good for you but it is also bad for your teeth. 

19.Don't drink coffee before you go to bed. 

20.I am keen on making friends all over the world.

Chúc bạn học tốt ^^

12.C

13.B

14.C

15.A

16.D

17.C

18.A

19.B

20.A

Chúc bạn học tốt ^^

20.C

21.D

22.B

23.A

24.A

25.B

26.D

27.C

28.A

29.B

30.B

31.C

32.C

33.A

34.A

35.B

36.C

37.A

38.D

39.C

40.A

Vietnam is famous with its traditional and delicious dishes. All of them easioly bring to anyone's mouth indeed, but as myself, I enjoy spring rolls best. Spring rolls are lightly fried rice -paper rolls, smaller and crispier than Chinese egg rolls but more flavorful. They are filled with highly seasons morsels of crab, shrimp, chopped vegetables, onion, mushroom, vermicelli and eggs.

1. They aren't looking for a gift for their mother

2. Melissa isn't wearing her new sweater

3. I am not making lunch for the family

4. We are reading about Economics in school at the moment

5. I am not watching a movie with my friends

6. Dad isn't working late

7. The Hendersons are painting their house

Chúc bạn học tốt ^^

C