–Excuse me, Mr. He, are you free? Lin Tao and I want to tell you _____. –Sure.
She is very good at painting. She can paint _______ her teacher.
---Can I help you? ---Well, I’m afraid the box is _______ heavy for you, but thank you all the same.
---Must I do the work today? ---No, you _______. You may do it tomorrow.
---Help _______ to some cakes, Jim. ---Thank you.
It was a difficult time, but we never ________ hope.