Where ______________? – An art exhibition. I think it’s really worth _______ and we can learn a lot from it.

Don’t shout to the boy. It __________rude.

The books on the chair __________ Mike’s, right?—Yes, they are.

While I ___________ TV, the bell rang.

I’m not sure when the 6th national population census (人口普查) completed?—_______ November, 2010. [ ]