In the streets,____________ was a hard job for the traffic police to keep the traffic in order.[ ]

Children under sixteen are not permitted toparticipate in such kind of activities ________ bad for their mentaldevelopment

Li Qiang is_____ honest boy. He wants to be_____useful person when he grows up

We arrived at work in the morning and found that somebody ________ into the office during the night.(2011·江西)

It will be my turn. I feel a bit nervous. — ________. You can make it.