Which of the following sentences is punctuated correctly?

Which of the following sentences is punctuated correctly?
 a. Our workers have been very efficient this year; they are expecting a bonus.
  b. Our workers have been very efficient this year; and they are expecting a bonus.
  c. Our workers have been very efficient this year and they are expecting a bonus.
  d. Our workers have been very efficient this year and, they are expecting a bonus.

Ques. 2

Which of the following parenthetical phrases is punctuated correctly?
 a. Ms. Silvan, addressing the entire department, explained the proposal.
  b. Mr. Frank speaking to the senior staff, resigned his position.
  c. I understand however; that there is a problem with the proposal.
  d. Yes I understand the information in the proposal.

Ques. 3

Which of the following sentences shows the correct punctuation of a series?
 a. You can choose from gray; red; purple and white.
  b. You can choose from gray; red; purple; and white.
  c. You can choose from gray, red, purple and white.
  d. You can choose from gray, red, purple, and white.

Ques. 4

Which of the following is a correct use of a superlative?
 a. She is the newest of the two workers.
  b. Charles is the better writer of the two-member team.
  c. She is the fastest of the three workers.
  d. Jill is the better student in the freshman class.

Ques. 5

Use an adjective to modify
 a. a noun or pronoun.
  b. a verb.
  c. another adjective.
  d. any of the above.

Ques. 6

Which of the following is an example of future perfect verb tense?
 a. I see you.
  b. I will have seen you.
  c. I saw you.
  d. I will see you.

Ques. 7

Which of the following sentences uses pronouns correctly?
 a. Me and you must work together.
  b. Mrs. Jones emailed he and she.
  c. To whom should we send the report?
  d. Him and her are the main contributors to the project.

Ques. 8

A pronoun should be used to stand for
 a. a phrase.
  b. a clause.
  c. a noun.
  d. any of the above.