For 1. Available
2. convincing
3. vain
Answer: See explanation
Explanation:
Series of items: When there are a series of items, the comma can be used to separate them e.g. I went to the market and bought rice, yam, beans and egg.
Introductory word or phrases: The comma can be out after an introductory word or phrase e.g. However, the dog bit the boy.
Interrupting phrases: The comma can be used for an interrupting phrase to give more information.
Compound sentences: Comma can be placed between compound sentences even though each sentence can stand on its own e.g. Tom doesn't like mangoes, so he threw them away.
They appear to like nature and forestry and they don’t like England either.
