a) Nguyên nhân:

1.C

2.D

3.D

3.C

4.B

5.A

6.A

7.A

8.D

9.C

10.C

11.B

12.D

13.A

14.A

15.D

16.B

1.went-was working .

2.was walking-attacked.

3.was sleeping

4.were sleeping-knocked

5.were..... staying

6.was driving-ordered.

7.moved-

8.rained-were playing

9.were looking-broke

10.were questioning

1.isn't/any/in the cup./there/coffee

=> There isn't any coffee in the cup.

2.hot./don't sit/the weather's/in the sun/when

=> Don't sit in the sun when the weather's hot.

3.seven?/at/do/get up/you

=> Do you get up at seven?

4.all/sang/thesong/of us/''happy birthday''

=> All of us sang the song ''Happy birthday''

5.can/for/help me/for/a minute?/can

=> Can you help me for a minute?

RONANDO sẽ sút vào quả bóng.

Bài 1:

1.They are going to stay at Minh's house in Dalat.

2.They are going around Dalat city by horse.

3.They're going to swim and play soccer on the beach.

4.No, they aren't.

5.They are going to stay in HCM city for three days and a half.

Bai 2:

a.of

b.of - in

Bai 3:

much-> many

\(\left(a+b\right)\left(a-b\right)=a\left(a-b\right)+b\left(a-b\right)=a^2-ab+ab-b^2=a^2-b^2\)

How often are the Olympic Games held?

{-3;-1;0;2;3;5} , tick nha