--Do you think the math problem was difficult?--Yes. But I could ________ make it.
She ______ nothing to me about it.
— How about the gongbaochicken? — Wow, it ________ good.
The silly crow(乌鸦)wanted to______ its song but none would enjoy it.
When __________ the Kings __________ to China?
Boys and girls, please don’t forget _______ your homework here this evening.