--Lucy is a(n) ______ student. She answers the teacher’s questions ______ in her class.
I ________ a letter from him this morning. I felt very excited.
Remember to ________ the lights before you leave the classroom.
We plan to ________ a short play on Teachers’ Day. 。
________ can make people healthy.
Go to bed early and sleep well. You can work ________ tomorrow morning.