The Suspicious Panda

Question: A panda walks into a local restaurant. He eats some pickled bamboo, shoots the manager, then walks out the door. The police arrive and question the panda. "Did you shoot the manager?" they ask. "Look at the dictionary," the panda replies. What does the dictionary say?

Question: People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?

Question: During what month do people sleep the least?

Question: When is 99 more than 100?

Question: What can be broken but never forgotten?

Question: Surrounded by life , yet life is its biggest enemy. But without life there is no need for it to exist. What is it?