--Did you enjoy meeting your old schoolmates at the party last week?--Yes, I did. We ____ each other since we graduated from college.
He gained his___by printing___of famous writers.
We have worked out the plan and now we must put it into___.
Three-fourths of the surface of the earth___sea.
If these trousers are too big, buy a smaller___.
These tables and desks are all made of_____.