Answer: D) Hadn't they.
Explanation for this question is being written.
Answer: C) So did Rio.
Answer: C) Keep the verb consistent with the main subject.
Answer: B) There are many reasons for the delay.
Answer: A) Does
Answer: C) Don't they?
Answer: C) Are
Answer: A) Stretches
Answer: C) There are many hardworking students in our school.
Answer: D) Hasn't she.
Answer: D) Have people begun.
Answer: C) Doesn't he.
Answer: D) Raindrops
Answer: A) Agree with the verb.
Answer: B) Why did you not call me?
Answer: A) AREN'T WE?
Answer: C) Was
Answer: C) Subject:we, Verb:do encounter.
Answer: A) Mt. Everest/rises.
Answer: A) Has my sister seen.
Answer: C) So am I.
Answer: A) Was
Answer: D) So am I.