Answer: C) The boy who trains every single day won the race.
Explanation for this question is being written.
Answer: B) Who
Answer: C) Adjective clause.
Answer: B) In which I hope to succeed.
Answer: C) That
Answer: A) Who
Answer: B) Youngest
Answer: A) The dog, which was barking loudly, scared the mailman.
Answer: A) Which
Answer: D) Car that.
Answer: C) Whose
Answer: D) Which
Answer: B) Hong Kong, which used to be a colony of the British empire, is in China.
Answer: D) "must be".
Answer: C) Who
Answer: C) We took last week.
Answer: B) FALSE
Answer: D) Who
Answer: C) Where
Answer: A) The student submitted the formative which was well-written.
Answer: B) Which
Answer: B) Which is red.
Answer: A) Whose
Answer: A) That
Answer: C) Which
Answer: B) Which/in which.
Answer: A) (that)
Answer: B) Which is my favorite season,.
Answer: C) Mason sent the letter he wrote to his boss.,.
Answer: A) Adjective clause.
Answer: B) It describes the pizza.
Answer: A) The car, which belongs to my neighbor, is parked outside.
Answer: A) She is the girl who likes to read books.
Answer: B) WHO
Answer: A) Where
Answer: B) Who likes to work in the morning.
Answer: B) Proper adjective.
Answer: D) Where
Answer: B) The man that is tall is my uncle.