I

1. am ⇒ was ( câu tường thuật thì lùi thì )

2. who ⇒ which ( which thay cho vật "the book" )

II

1. My father told me not to spend much money on my holiday that summer.

2. My teacher who I will never forget is loved a lot by all his students.

3. More solar energy will be used in the future.

4. Although the prices of Janpanese cars are high, they sell well.

!No Copy!

@Nếu thấy hay thì cho ctlhn nha❤~

Part 4:

1. am→was.

2. who→which.

Part 5:

1. My father told me not to spend much money on my holiday this holiday.

2. My teacher who I will never forget is loved a lot by all his students.

3. More solar energy will be used (by them) in the future.

4. Although the prices of Japanese cars are high, they sell well.