用所给词的适当形式填空。 1. It's senen o'colock, let's _____(have) supper. 2. We should _____(exercise) all the time. 3. When the teacher came in, We all stopped _____(talk). 4. Li Mei is the _____(good) student in our class. 5. She has _____(work) here for ten years. 6. Chinese teacher is coming! Let's stop_____(have) lessons .