The last time she met me was 5 month ago.

\(\rightarrow\) She hasn't met me for 5 month.

i haven't cut my hair since i left her

he hasn't gone abroad before

She has driven for one month

We have eaten since it started to rain.

My robot will be able to a hi-tech modern robot. His name is Songgoku. It will have a digital camera to tracking. It will understand what we say and talk to people. It will be able to dangerous work for us. It will help me do all housework, lift heavy things and guard my house, cut the grass, make coffee, watering the flower, gardening the plant, feeding the dogs and cats and do many works. It help me very much, so I love Songgoku very much.

CÓ

1. Robot could do many things very simple in the past.

2. Was Lan write and read when she was 6?

3. Can robot understand what we say?

4. Robots will be able to do many thing like humans.

5. You will be able to turn on TV by your voice near in the future.

CHÚC BẠN HỌC TỐT.

-What do these three Rs stand for?

3Rs stand for 

+ Reduce

+ Reuse

+ Recycle