---What’s wrong with you, Jack? You look tired.---I ________ to prepare for the final exam last night.
We will have two family parties this autumn. One is at Halloween and is at Thanksgiving.
Li Na is _____ famous ______ all the tennis fans in China know her.
---Remember this, children. ____careful you are,____mistakes you will make. ---We know,Mr. Li.
—_________do you study for a test? —By_________to tapes.
—Do you know _____ ? I'm going to see him. —Sorry, I don't know.