2.We couldn't play football because it was raining
3.She could not understand anything I said.
   I could not understand anything she said.
4.(Câu 4 mình hơi hoang mang nên xin phép ko trả lời)
5.My brother could draw picture when he was two.
6.Could the robots could clean house ten years ago?
7.This suitcase was very heavy so I couldn't lift it.
8.Dave could play tennis well when he was young.
9.Today, robots are more intelligent than those in the past.
10.Many years ago, robots couldn't clean the floor or coffee.
11.(Câu 11 cho phép mk được skip ah!)
12.Teaching robots can help children improve their pronunciation in English.

2 we couldn't play football because it was raining

3 she could not understand anything I said 
   I could not understand anything she said

4 when you were five you could speak english ? 

5 my brother could draw pictures when he was two

6 Could  robots can clean the house ten years ago?

7 This seitcase was very heavy so  I could lift it

8 Dave could play tennis very well when he was young 

9 Today Robots are more intelligent than those in the park

10 Many years ago robots couldn't make coffee or clean the floor

11 Robots  already  can do many by tasks done human

12 Teaching robots can help children improve their pronunciation

13 Robots will change our life near in  the future

14 In 2030 robots will able to instead us of do all the housework

15 Future robot will have  ability to  interact with human beings

16 In the next 20 or 30 years we will see humanoid robots in our house 
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