Read and write.用所给单词的适当形式填空。
1. Mr. Lee ________ (be) late for work this morning. He ________ (go) to sleep late last night and he ________ (can not) get up on time this morning.
2. I think you can ________ (reuse) this bottle. It ________ (be) a beautiful vase.
3. —Why ________ Lucy ________ (cry)?
—She can’t find her dog. It ________ (be) here half an hour ago.
4. You have a lot of ________ (paper). Give me a piece, please.
5. —Is this pen holder ________ (your)?
—No, it’s my sister’s.
6. There isn’t ________ (some) milk in the fridge.