Tom: Can I put my football here?
     Peter: No, you can't.
     Tom: Where can I put my football? 
     Peter: You can put it behind the door.
     Tom: Can I park my bike in front of the classroom?
     Peter: No, you can't. Tom: Why not? Peter: Look at the sign., please.
     Tom: Yes, I must look for the right place for my bike.
     Peter: You can park your bike under that tall tree. There is not a sign "Don't park bikes there."

(     ) 1. Tom can put his football in front of the door.
(     ) 2. Tom can't park his bike in front of the classroom.
(     ) 3. Tom can park his bike under the tall tree.
(     ) 4. There is a sign"Don't park bikes" in front of the classroom.
(     ) 5. There is a sign"Don't park bikes" under the tall tree.