— Do you know Lucy’s grandma?—Of course. She is a kind woman, but she has______ for about a month since she _____ in the accident.
She ______ know the answer, but I’m not sure.
--- Why don’t we go climbing tomorrow? --- ___________
The little girl kept _____ the house, because she wanted to keep it _____.
___________ the three questions, which one is the most difficult to answer?
The Yellow River is __________ river in China.