`6`. `D`

vì:

Ta có công thức:

`\text{ S+be+adj/N+... }`

The Thai là số ít nên dùng "is"

Ta có cụm "experienced farmers : những người nông dân có kinh nghiệm "

`7`. `A`

vì:

Ta có công thức:

`\text{ S+V(s/es)+adv+... }`

The family là số ít nên dùng "lives( chia động từ)"

Sau nó là một adv nên dùng "simply : đơn giản " 

$#Nu:)))$

6:The Thai/ be/ experienced/ farmers.

A.The Thai to be experienced farmers.

B.The Thai are experienced farmers.

C.The Thai is experienced farmers.

D.The Thai be experienced farmers.

Questions 7: The family/ live/ simple/ they/ enjoy /way/ life.

A.The family lives simply and they enjoys their way of life.

B.The family live simply and they enjoys their way of life.

C.The family live simply and they enjoy their way of life. 

D.The family live simple and they enjoy their way of life.