Pikachu là học 24h chứ gì nữa

- what do these three Rs stand for ?

3Rs stand for reduce, reuse, recycle.

1.a) I visited Bana Hills last summer.                                                                                              b)They went skiing three moths ago.                                                                                              c)Nam is doing homework at the moment.                                                                                    2.a)I like the living room best in my house.                                                                                     b) How about going to Sa Huynh Coffee tonight.                                                                         c)You mustn't talk too much in the class.

nhầm 

2.no, they aren't

3. In the US , people use robots to guard some important places.

4. In Japan , people use robots in factories to build cars. 

1.Because a robot cannot think or do things alone.

2. Today, robots are not very popular

D :weather cool-->cool weather 

1.B 2.C 3.D 4.A 5.D 6.B 7.B 8.B 9.B 10.A

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