.      The waiters cleaned the rooms last night. ’ The rooms...were cleaned by the waiters last night

.............................................................................

2.      They caught the elephant again. ’ The elephant..was caught again........................................................................................

3.      They built the house in 1950. ’ The house.was biult in 1950.................................................................................................

4.      The pupils sent the letters the day before yesterday. ’ The letters..were sent before yesterday ...............................................................

5.      Nguyen Du wrote Kieu story. ’ Kieu story.was written by Nguyen Du ................................................................................................

1 B

2 A

3 C

4 A

5 D

18

D

x=3,91

x=3,92

tính số khối của nguyên tử???\

a, tổng số hạt mang điện của nguyên tử sắt là:

26x2=52 hạt 

số hạt n là:

52-22=30 hạt

Choose the odd one out.

bowl

carton

sweet

bunch

1.               His telephone number is 8 259 640.

...What is number phone

2.               It‟s about two kilometers from my house to the movie theater.

How far is it from your house to the moive theatre

3.               I will go camping next Sunday.

when will you go camping

Her date of birth is on August 21^st.

.......When is her birthday...

5.               She will be fourteen on her next birthday.

how old will she be on her nexdt birthday

6.               My father is an engineer.

What does your father do 

7.               My address is 2/10B Ly Thuong Kiet Street.

.What is your address

8.               He works in a hospital.

Ưhere does he work.

câu 1 : sai ở ago five minutes