China is the first nation ________ sent Chang’e Ⅳ to the far side of the moon.
which
that
who
—Another cup of coffee? —No, thanks. I ________ be off. My friend is waiting for me at the school gate.
Must I finish my homework first? No, you ________.
The girl is so excellent that you ________ praise her too much.
—Listen! Someone is knocking at the door. Who _____it be? —It_____ be Tom. He phoned to visit me this evening.
---May I do the rest of the work tomorrow? ---Yes, of course. You finish it today.