stones and sticks, they ran into the street and joined in the fighting. 

I'm lucky because my job has_____hours, and I can come and go pretty much as I want. 

We need a (n) ____________ team leader who can really motivate the members to work harder.

Students are ____for new knowledge to suit themselves to the future jobs in various fields_______ which they are unfamiliar.

With Chang’e II launched successfully, China is      to send up a manned spaceship to the moon within five or six years.