2. have been instructed

3. has been ...

1. They have spent a lot of money on advertising.

         → A lot of money on advertisting have been spent.

 2. The chief engineer has instructed all the workers of the plant.

         → All the workers of the plant has been instructed by the chief engineer.

      3. Science and Technology have completely changed human life.

         → Human life have been completely changed by science and technology.

1. Somebody has taken some of my books away.

         → Some of my books has been taken.

      2. They have provided the victims with food and clothing.

         → The victims have been provided with food and clothing.

      3. A sudden increase in water pressure has broken the dam.

         → The dam has been broken by a sudden increase in water pressure.

      4. Luckily for me, they haven't called my name.

         → Luckily for me, my name haven't been called

      5. They have bought the land next to my house.

        → The land next to my house have been bought.

a. The Nile/long/river/ in the world. 

→ The Nile is longest river in the world.

b. Lan/ talk/ slow / in my class. 

→ Lan is talks the most slowly in my class.

c. English coffee/bad/ of all. 

→English coffee is the worst of all.

d. Anna/ work/ simple/girl/ in the world. 

→ Anna works the most simply girl in the world.

e. That/high/ mountain in the world.

→That is the highest mountain in the world.

1. She asked me if I spoke English well.

2. He asked me what I was reading.

3. Mai asked me who I lived with.

4. Ba asked me if I did my homework every day.

English is a very useful language. If we know( 1 ) English, we can go to any countries we like. We will not find it hard to make people understand what( 2 )  we want to say. English also helps us to learn all kinds of subjects. Hundreds of ( 3 ) books are written in English every day in  many countries. English has also helped to spread ideas and knowledge to( 4 ) all corners of the world. Therefore, the English language has helped to spread better understanding  and( 5 ) friendship among countries( 6 ) of the world.  

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

21 "he works in a bank" she said
=> She said he worked in a bank.
22 "we will have a party tonight" she told me
⇒ She said they would have a party that night.
23 " what should I eat first?" she wondered
⇒She wondered what to eat first
24 "where should we go on the holiday?"
⇒She wondered where to go go the holiday
25 "what should I do now?" he said (not/sure)
=> He not sure what should he do now
26 "I will live there after graduation?" she said
=> She said she would live there after graduation
28 "I will visit my friends next Sunday" he said
=> He said  he would visit his friends the following Sunday.

cần chứ, có nhiều cái tiếng việt ko cần nhưng tiếng anh cần