-- _____? --- He is kind but sometimes a little silly.
The zoo keepers is worried because the number of visitors __smaller and smaller.
With films like Avatar proving__________ in cinemas, many technology experts believe 3D is now set to take over the home market,
Look out! Keep away from the house, _____ the roof is under repair.
YaoMing, as we know,_____ like to play basketball.
There are over 58,000 rocky objects in ______ space, about 900 of which could fall down onto ______ earth.