单句语法填空
1．To be on time for school，I got(get) up at 6: 00 every morning when I was at high school.
2．After he got off the bus，he realized that he had_left(leave) his bag on it.
3．Mr.Smith was_writing(write) a book last month，but I don’t know whether he has finished it or not.
4．My headache is killing me.I thought(think) it was going away.
