It is said that 90% of the ancestors (祖先) of Chaoshan people were from Central Plains of China. — That’s right. They started to here many years ago to escape from wars.

Don’t worry! I’ll send you an e-mail .

Ittook_____buildingsuppliestoconstruct these energy-saving housesIt took brains, too[ ]

I really don’t know _______ .

is the science lab It’s behind the office.