Dogs have a highly __________  (发达的）sense ofsmell.
Investors must make an __________ (基于一定知识的)guess as to the company's potential.
Themayor urged __________ (市民）to begin preparing for a major storm.
He has a good __________ (体系）of teaching languages.
If some athletes use drugs, it is __________ (不公平的）to the others.
We've turned the smallest bedroom into a __________ (婴儿室）for our new baby.
The __________(主要的）reason for advertising is tosell more goods.
He is __________ （讲课）Russian literature.
Is there any  __________ (特别的）colour you wouldprefer?
The conference will __________  (使成为可能）greater international cooperation.