It was said was how the Chinese first raised silk worms.
of danger in the street at night, she had to go home, with a friend her.
—Jack, can you make a sentence to ________ the meaning of the new phrase? —Well…
—Shall I lock the lab now before I go home ? —__________ . I’ll check it myself later.
—Really? Who will give _________ lecture? — Mr. Wang, ________ professor from Nanjing University.
Almost everyone is ________ bringing down the price of housing because it’s too high now.