听短文，选择正确答案。
1. Li Lei wanted to ______.
A. sleep
B. tell others the time
C. know the time
2. ______ woke Li Lei up a few minutes later.
A. An old man
B. A policeman
C. A woman
3. ______ asked Li Lei about time.
A. One person
B. Two persons
C. Three persons
4. A piece of paper was ______.
A. on the bench
B. in the tree
C. in the front of Li Lei
5. Li Lei was asleep about ______.
A. thirty minutes
B. thirteen minutes
C. thirteen hours
