—Let’s go to Mr. Yu’s speech on Chinese culture, shall we?
—________ We can go next time.
Why not?
That’s all right.
Never mind.
I’m afraid it’s too late.
—Did you feel lonely when you worked in the west? —No, I have many hobbies, _____ when I kept a lot of pets then.
Mr. Black comes from England, and he has stayed in China for three years. So you can talk with him ________.
It is difficult for us to learn a lesson in life _______ we've actually had that lesson.
One fifth of the work _______ by computer last year.
This is the very thing ______ belongs _____.