---Hey, look, where you are going!---Oh,I'm terribly sorry. ________.
A. I'm not noticing
B. I wasn't noticing
C. I don't notice
D. I haven't notices
查看答案
He _____________________ basketball with his classmates when I saw him.
A. is playing
B. plays
C. played
D. was playing
当需要查看MySQL服务器中已存在的数据库,使用命令()。