`1,` They said that they could spend part of their budget on research and development.

`2,` The reporter said that she wanted to donate money to establish that pharmaceutical laboratory.

`3,` He said that Thomas Edison was born in `1847` and died in `1931`. (sự thật hiển nhiên) 

`4,` The President said that our country didn't have sufficiency of natural resources.

`5,` Bill said that his doctor was advising about many things other than medicine.

`6,` They said that they might do another experiment to examine that formula the next day.

tomorrow -> the next day 

`7,` The explorer said that their mission would explore the planet's southernmost latitudes.

`8,` The scientist said that technology would change how we thought and lived. 

`9,` She said that her brother was then concentrating on a career as a software engineer.

now -> then 

`10,` He said that Jack and Jim were going to a technology fair then. 

now -> then 

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Giải thích:

Câu gián tiếp dạng trần thuật:

`-` S `+` told/said `+` that `+` S `+` V(lùi thì)…

*Chú ý:

`-` Khi viết lại câu tường thật, nhớ bỏ dấu ngoặc kép.

`-` Nếu trong ngoặc là câu sự thật hiển nhiên thì không cần lùi thì. 

`-` Nếu ngoài ngoặc là said to thì chuyển thành told, said thì cữ giữ nguyên. 

${\text{Lùi thì: }}$

`+`quá khứ đơn `->`  quá khứ hoàn thành

`+` hiện tại đơn `->` quá khứ đơn

`+` hiện tại hoàn thành `->` quá khứ hoàn thành

`+` hiện tại tiếp diễn `->` quá khứ tiếp diễn

`+` quá khứ tiếp diễn `->` quá khứ hoàn thành tiếp diễn

`+` hiện tại hoàn thành tiếp diễn `->` quá khứ hoàn thành tiếp diễn.

`-` Model verbs: 

`+` will `->` would

`+` shall/can/may `->` should /could/ might

`+` must -> had to/mustn’t `->` didn’t have to

`+` should / could/ might/ would/ ought to `->` giữ nguyên