Answer: A) Are
Explanation for this question is being written.
Answer: B) Is
Answer: B) No, it isn't.
Answer: A) NO CHANGE.
Answer: C) Quantitative primary data are costly to obtain.
Answer: A) Your brother-does.
Answer: A) Isn't
Answer: B) Clears
Answer: A) Has
Answer: C) Is
Answer: A) Is
Answer: C) Scientists
Answer: C) Do
Answer: C) Were
Answer: A) Contains
Answer: C) Are
Answer: B) WRONG
Answer: C) Subject 'He' is singular; verb 'was' agrees with it.
Answer: B) Were
Answer: A) Have / got.
Answer: B) Are
Answer: A) They'll be by the sea.
Answer: A) Feels
Answer: A) Does / its.
Answer: B) My dad.
Answer: C) Jennifer
Answer: A) Happily plays.
Answer: B) Does/ help.
Answer: A) Zainab, aam.
Answer: B) Does
Answer: C) Runs
Answer: C) Doesn't live.
Answer: A) Do not buy.
Answer: C) Are going.
Answer: D) Am, are.
Answer: A) Kid
Answer: A) Have
Answer: A) It was only his closest friends who knew about his illness.
Answer: B) When are.
Answer: A) Yes
Answer: B) Have
Answer: C) It is open.
Answer: B) You are really smart.
Answer: B) Was, in.
Answer: B) Has known.
Answer: B) Has to wear.
Answer: A) Yes, I do.
Answer: D) Are
Answer: A) Doesn't have any.
Answer: C) Drive
Answer: D) Don't understand.
Answer: A) Rabbit