Answer: C) It marks a difficult situation where you try to do several different things at the same time.
Explanation for this question is being written.
Answer: D) Sit back.
Answer: A) True
Answer: C) Bush
Answer: D) Very busy.
Answer: C) On and off.
Answer: C) To do more than what is expected of you.
Answer: B) Leave things out.
Answer: A) Have lots of things that need to get done.
Answer: C) That consistent effort leads to improvement.
Answer: A) Burning the candle at both ends.
Answer: A) Act mechanically.
Answer: D) To let things happen without interference.
Answer: A) A little effort.
Answer: C) Back
Answer: D) Face the music.
Answer: C) Worn out.
Answer: D) Grit
Answer: A) Bite off more than you can chew.
Answer: B) Try as hard as they can.
Answer: B) I'm going to study.
Answer: C) Out of breath.
Answer: A) Pull his socks up.
Answer: C) Make a go of.
Answer: D) To redo something completely.
Answer: C) They looked everywhere possible.
Answer: C) The test is easy.
Answer: C) Don't try to do more than you can do.
Answer: C) Wasting time.
Answer: B) Mom, I am going to hit the book.
Answer: B) Fight sb/sth with tooth and nail.
Answer: B) Delay doing something.
Answer: B) Finding a needle in a haystack.
Answer: A) A piece of cake.
Answer: A) Dilly dally.
Answer: A) Books
Answer: A) Sammy hit the books to get ready for the test.
Answer: D) Have a go.
Answer: B) Hang in there.
Answer: B) Whenever she has a chance.
Answer: A) Push one's limits.
Answer: A) Nothing will come of nothing.
Answer: A) To exert effort in employment to earn a livelihood.
Answer: B) B
Answer: A) Tilting at windmills.
Answer: B) To avoid or delay dealing with a problem.
Answer: A) Backwards
Answer: B) Something very difficult to do.
Answer: B) Claw
Answer: B) Piece of cake.
Answer: D) To make efforts that are useless and/or vain.
Answer: D) Opened a can of worms.
Answer: D) Practice
Answer: B) Bend over backwards.
Answer: A) She is out of practice with her piano playing.
Answer: A) Busy and frenetic activity or excitement.
Answer: A) Scrape the barrel.
Answer: D) Last resort.
Answer: C) To study, especially for a test or exam.
Answer: A) Working too many hours without a break.