English handbook questions

1. The heading goes in the upper left corner and put a) student's name b) teacher's name c) subject, period d) date
2. A CS is the error of joining two complete sentences with a comma. The boy has a dog, they went home.
3. A FS is two sentences put together in one. A CS is the error of joining two complete sentences with a comma.
4. comma's are used to separate clauses and make a pause.
5. A semicolon is used to put two complete sentences together; they are used like this sentance.
6. numbers 99 and below should be spelled out.
7. Plays are underlined.
8. Effect as a verb means bring out or perform. Effect as a noun means result or impact. Affect means change, disturb, influence, feign or pretend to feel.
9. there is a place. their shows possession. they're is a contraction for they are.
10. Parallel structures are parallel elements in the same grammatical grammar.