The growing speed of a plant is influenced by a number of factors, ______ are beyond our control.
If no measures are taken, the special wild plant will ________ some day.
Sir, you ________ take this seat. It’s just for the old.
He spoke as though he________ anything of the world. --Really?
As we know, the 2008 Olympic will________ in Beijing, China.
The old man has two sons,________is a soldier.