III.

1. When Nam was ten, he could spoke English on the phone.

2. My sister wrote poems when she was eight.

3. They are worried that some people will use robots on bad things.

4. If people plant more trees in this area, there will be no floods.

5. If we recycled old papers, we will save lots of labour trees.

IV.

1. plants

2. stand

3. natural

4. useful

5. polluted

- Thieukhue -

when nam speak english his phone

my sister , she write poems eight ( chắc thế )

if people plant more tree area there be no floods

if we recycle old newspapers we labour lot save tree

 cần làm IV không làm luôn cho