When you post a letter, don’t forget to put a stamp ________ the envelope.[ ]

Please look around. What can you see ______ your right?[ ]

Excuse me,Can this magazine be taken out of the reading room? —–,———you can only read it here.

Excuse me, but I don’t think you can take photos here.— Sorry. I _______ this is no-photo zone.（地区）

Take care! Don’t get the oil on your clothes, for it _______ easily.