1.
1. elegant
2. floral
3. collapse
4. bushy
5. muscular
2.
1. too worried
2. formal enough
3. too shy
4. detailed enough
5. too skinny
3.
1. Two letters were written by Mike yesterday.
2. Endangered species are supported by the government.
3. The house is being reconstructed by the builders.
4. Has Jim's project been finished?
5. Some sweets will be brought by my mother.
4.
1. away
2. out
3. off
4. on
5. through
6. with
5.
1. informal
2. illegal
3. impossible
4. impolite
5. irresponsible