1. started - would arrive

2.would be -ate

3.lost-wouldn't be 

4.would become - forgot

5.got -would buy

6.had -would sail

7.had -would learn

8.told -would be 

9.would spend-were

10.lived -would run

11.would help-knew

12.would buy-had

1.A picture is being painted by my daughter.

2.Beef isn't being eaten by Sam.

3.Soccer is played in the yard. 

4.A novel is being read in class now.

5.Pottery is made in his friend's room by him everyday

Giải tắt câu nào thế để mik sửa lại 

18.B 19.B 20.C

11.B 12.C 13.C 14.B 15.D 16.C 17.C

I.1C 2A 3.A 4.D 5.A 6.B

7.D 8.A 9.A 10.D 

8.will be able to speak

9.will be lying

10.Will- meet

III.

1,cultural

2,colourful

3.performer

4.celebrations

5.celebratory

6.traditional

7.entertainment

8.festive

9.excitement

10.begining

IV,

1,How far is it from here to ACB bank?

2.How long have you known Marie?

3.Did they use to be friends at the university?

4.What time did Sarah leave?

5.What is she watching?

6.What kind of film is it?

7.What does she like watching?

8.Who does it start?

9.How did you feel before your last maths test?

10.How did she feel when she watched a gripping film?

I. 1cultural

2.renewable

3.so

4.catch

5.When

6.limited

7.will be put

8.B

9.D

10.C

11.A

12.B

II.

1Will- wait

2.will be having

3.will send

4.will find

5.will pass

6.will - do

7.will have - will be

\(1) \sqrt{9a^2.b^2}\)=3ab

\(2) \sqrt{3a}.\sqrt{27a}=\sqrt{3a}.3\sqrt{3a}=9a\)

\(3) \sqrt{3a^5}.12a=12\sqrt{3a^7}\)

\(4) \sqrt{5a}.\sqrt{45a}-3a=15a-3a=12a\)

\(5) \sqrt{3+\sqrt{a}}.\sqrt{3-\sqrt{a}}=\sqrt{(3+\sqrt{a}).(3-\sqrt{a})} =\sqrt{9-a} \)

\(6) \sqrt{3+\sqrt{5}}.\sqrt{3\sqrt{5}} =\sqrt{\sqrt{3\sqrt{5}}.(3+\sqrt{5})} =\sqrt{9+\sqrt{15}}\)