He had his camera ready ____he saw something that would make a good picture.
If _____ green, the door might look more beautiful.
Did you notice the little boy _____ away?
-Who were those people with the banners?-A group _____ itself the League For Peace.
The foreigner tried his best, but he still couldn't make his point _____.
Mr. Wang has two _____ sons; one has got married and the other has gone abroad.