________________of the students who took part in the military training（军训） is 450．

He is__________as a leader but he hasn’t__________in teaching.

There aren't ___ flowers in our garden.

The Chinese are looking forward to the first_________to land on the moon after Yang Liwei’s successful trip to space.           

A U.N. peace-keeping _______ was sent to that country and the soldiers would devote all their _______ to their job.