Silk from China found its way to India, the Middle East and Rome, spices(香料) and glass, which was not known to China.
You _________ be right, but I don’t think you are.
“Do you think he is lazy?” “I _________ so once, but I don’t now.”
Mike is often absent from class.” “Tell him he _________ answer for it if he goes on behaving like that.”
He tried to ________ in Japanese.