Formal language is also called "proper language" because it is the type of language you would use when first meeting someone or giving a speech at a high class place so the correct answer is:
<span>B) Have I convinced you that the study of grammar is important and well worth your effort? </span>
A good word choice i would guess that it would be small and a hermet because they love living alone in their cottages
Sorry to say this but I think the question is asking you what event would make you feel as happy as billy, not anyone else.
Answer: The geography section of Margie's mechanical teacher was geared to a higher level than hers. The County Inspector slowed the geography section of Margie's mechanical teacher to that of an average twelve year old's. He further assured her mother that the learning progress was quite satisfactory.
hope it helped.