Ⅰ. 单项选择 (30分)
1. The girl devoted all her time _______ others.
A. to help B. helping
C. helped D. to helping
2. Not only the students but also the teacher _______ enjoying the film at 9 pm yesterday.
A. has been B. was
C. are D. is
3. Millie _______ her key to the classroom at home this morning.
A. left B. forgot C. leaves D. forgets