Viết lại những câu sau sao cho nghĩa không thay đổi:
1, "paper was first used by the chinese" we all know this.
--> we all know that _____________________________.
2. "I am going to read some scientific books this weekend" Mai said.
--> Mai said that _____________________________________.
3."the invention of the internet in 1969 is the greatest invention " Ha said.
--> Ha said that _________________________________________.
4."the first handeld mobile phone weighed 2.5 pounds" John told me .
--> john told me that________________________________________.
5."apple has sold over 900 million iphones globally" the manager said .