Answer: B) I didn't meet him because I forgot to do it.
Explanation for this question is being written.
Answer: B) The door is two metres long.
Answer: A) I like the living room in the house most.
Answer: A) His favourite subject is English.
Answer: C) Many books are in the library.
Answer: A) You must do your homework before going to school.
Answer: D) Recycling rubbish two years ago.
Answer: A) A
Answer: C) Lucy saw an amazing sight.
Answer: B) My childhood was not that good since I fought with siblings and friends.
Answer: A) I'm sure that this isn't the right way.
Answer: B) He possesses great musical talent.