Answer: A) They said she would help them.
Explanation for this question is being written.
Answer: B) She said that she could solve the equation $x^2 + 2x + 1 = 0$.
Answer: D) She told me she wanted to buy a painting.
Answer: C) Saw
Answer: C) That Ken had lived in Korea for 5 years and he hadn't been able to speak Korea.
Answer: C) He said that he had never seen such a beautiful place.
Answer: A) She said that she had woken up early.
Answer: A) Bobby said that the team had been trying their best.
Answer: C) She said that she hadn't travelled by underground before she came to London.
Answer: A) Had failed.
Answer: B) Amy said that Polly was learning her script upstairs.
Answer: C) She told me (that) they had gone out last night the night before.
Answer: B) Told was.
Answer: B) Had finished.
Answer: B) He said (that) he had missed the train.
Answer: B) He said that he would go to the store.
Answer: A) Correct
Answer: A) Did
Answer: E) Would come.
Answer: B) Owned
Answer: A) He said that Sarah had gone to the playground three times the previous week.
Answer: C) To have earned.
Answer: B) Jessie said (that) she was going to go to Long Beach.
Answer: A) Simple past + present continuous.
Answer: B) Hafsa said that she didn't know the answer.
Answer: C) She said she was listening to music.
Answer: A) Had watched.
Answer: A) She said she would be busy the next day.
Answer: A) They said that they took yoga class.
Answer: A) "I will never go to the mall so close to Boxing Day.".
Answer: B) Hadn't been.
Answer: C) Had had.
Answer: A) She got.
Answer: B) Had
Answer: B) Was
Answer: B) Will come.
Answer: B) He said, "I had finished my work.".
Answer: B) He was writing a new novel.
Answer: B) Wants
Answer: C) James and David said that they had to go then.
Answer: A) Grandpa said he had been travelling around the world for over three years.
Answer: B) They said that they had finished their homework.
Answer: D) The students said that they had prepared the salad.
Answer: B) Past Simple.
Answer: B) He said he would meet me at the station.
Answer: C) Tom said he had already had breakfast, so he was not hungry.
Answer: A) Rahul said that he would manage hereafter.
Answer: C) Had been opened.
Answer: B) Went
Answer: D) Past Simpe (S + V2).
Answer: B) Was learning.
Answer: B) Yes
Answer: B) Past Perfect Tense (Does not change).
Answer: B) Was to.
Answer: A) Gemma said Poppy was trying to paint the wall.
Answer: A) 'd had.
Answer: A) Had
Answer: B) They said that they had completed their work.
Answer: B) Would have finished.
Answer: A) He said that she had already left for the airport.
Answer: A) Past tense.