Answer: C) All of them are correct.
Explanation for this question is being written.
Answer: C) Do you remember how long we stayed in Qatar?
Answer: C) We like the computer we bought yesterday.
Answer: D) The Emerald City was hard to make because it all had to be green.
Answer: B) Sandwich
Answer: A) It is important to remember that the best things in life are free.
Answer: B) She improved after practicing the piano.
Answer: A) Substitution Mutation.
Answer: A) While looking out the window, the man thought about his life.
Answer: A) I visited the cafe where I met him.
Answer: B) The pencil that is dull needs to be sharpened.
Answer: A) Hoa eats vegetables every day and drinks milk every morning.
Answer: C) They had to leave immediately.
Answer: C) That we really wanted to buy it.
Answer: B) Wordlessly, I walked to the front of the class because I was nervous.
Answer: C) Maria ate the last doughnut knowing I like them too.
Answer: B) It was Michelangelo who painted the Sistine Chapel's ceiling.
Answer: A) Although I wanted to go swimming, it was too cold.
Answer: C) I have an aunt who lives in New York.
Answer: C) We are late for school because we got up late.
Answer: A) Yes
Answer: B) Transitions/Conjunctive Adverbs.
Answer: A) We saw white clouds in the sky because of the steam.
Answer: A) The more forests we cut down, the hotter the Earth becomes.
Answer: B) It was because of hard work that he passed the exam.
Answer: B) He said that he is going to the gym.
Answer: A) The sun was shining, so we went for a walk.
Answer: A) He has lived here since he was a child.
Answer: C) Carla and Bob weren't paying attention to the teacher, so they couldn't do their homework.
Answer: A) An all-sixth-grade team day will be held on Friday.
Answer: A) She is the woman about whom I told you.
Answer: C) Chile has better food than the other two countries.
Answer: C) Barking, the dog scared the cat, which ran away.
Answer: A) Might be given.
Answer: B) This is the house where I grew up.
Answer: A) I don't like Math.
Answer: C) The dog barked because there was someone at the door.
Answer: A) Willie liked the puppy he saw at the pet store and plans on buying it tomorrow.
Answer: B) The problem was so difficult that he couldn't solve it.
Answer: A) The flowers looked beautiful because they bloomed.
Answer: D) N-9
Answer: A) It's personal conflict that causes businesses to fail.
Answer: B) Jack and his sister love to swim.
Answer: A) She seldom takes the bus.
Answer: B) It is painting that she loves.
Answer: B) If it rains tomorrow, we will stay inside, and we will play games.
Answer: A) The computer that helps me with my work is fast.
Answer: B) Lucy ran to the store and bought some apples.
Answer: B) There are 2000 students in our school.
Answer: A) This is the book which I wanted to read.
Answer: B) We were listening to the radio, which gave me an idea.
Answer: D) D, A & C are correct.
Answer: B) Although I usually like red, I wore black to the party last night.
Answer: D) Jake loves cake and pie.
Answer: A) Being tired, she went to bed.
Answer: A) It was cold, so we stayed indoors.
Answer: B) By adding a relative clause to give more information about a noun.
Answer: B) Digital devices.
Answer: B) This is the room, which was painted last week.
Answer: B) While hiking, we saw a waterfall.
Answer: C) Due to rain, the match was canceled.