—Look! The lights in the teachers’ office are still on. Is Mr. Li working?—No. It _______ be Mr. Li. I saw him leave just now.
You should take____ umbrella if it rains.
--Alice, you got an A in this science exam. ---__________________.You know I am not good at it.
I think Hainan is one of ___________in China.
It’s really nice of you ________me with Chinese problem
---What a beautiful coat. How much is it? ---It didn’t ________ much. It's only 80 yuan.