Objects Crossword

If you got something wrong, u delete with it
You use it to write
You put stuff on it
You use to call someone
You sit on it
You put stuff on top of it
You open it before get into the room
Open it to get some fresh air
You use it to type
You write on it
You put liquids on it
You use it to sharp your pencil
Bike has two of them
You use to protect your feet
You use it to cover your body
You use it to make a straight line
You cut light stuff with it
You open the lock with it
Protects your head
Protects your hands