12.. They will show flying cars to the public when they finish it. ( Change into passive form)

Ò Flying cars ……………………………………………………………………..

  13.. hope/ invent/ I/ a machine/ to do/ will/the housework/ someone/ for/ me/ that.(rearrange the words)

Ò …………………………………………………………………………………….

   14,.It is very noisy in the city but we enjoy living there.( Use “although”)

Ò………………………………………………………………………………………

 15,.My friends save money to fly to Spain. ( make question for the underlined part)

Ò…………….……………………………………………………………….

  16,. I find learning English interesting. (rewrite sentence and keep the meaning unchanged)

 -> I am …………………………………………………..…

 17,. They will use solar energy to protect the environment.( Change into passive form)

-> Solar energy …………………………………………………………………..

  18,. Although she does a lot of exercises, she is still very weak .( Use “in spite of”)

->In spite of …………………………………………………………………..

   19,.Dr. Lai will check your teeth in a moment.( make question for underline part)

……………………………………………………………………………………

  20,. Make up sentences using the words and phases given:

about / 30 km / my town / Ha Long Bay /.

Ò…………………………………………………………………………………….

21,. Make up sentences using the words and phases given:

 my family / used / go / holiday / seaside / summer /.

Ò …………………………………………………………………………

33: In spite of being tired, Tom finished  his project

 -> Although ……………………………………………………………………

34: They sold that old car two months ago.

=>  That old car……………………………………………………………………

35. Although the weather was bad, she went to school on time

->  Despite …………………………………………………………………………..

36: He started to learn Chinese five years ago.

 ->  He has……………………………………………………………