Answer: B) The chemical waste wasn't wasted there.
Explanation for this question is being written.
Answer: C) My friend said that she would visit me the next day.
Answer: A) Seanu answered that he had been writing letters.
Answer: C) Dani said that they were finding the ship then.
Answer: C) Mdm Lim told the class that she had been marking our work that morning.
Answer: D) Past Simple.
Answer: C) She said she needed not worry.
Answer: C) Was going.
Answer: A) She had lost the key of her room.
Answer: B) Helena said that she knew her contact number.
Answer: A) Arrived
Answer: B) My mother said that she was leaving then.
Answer: B) My sister said that she would work abroad.
Answer: D) The letter had been typed.
Answer: B) Were doing.
Answer: A) He said that he did his work daily.
Answer: B) The verb in the conversation changes.
Answer: B) He said that he had lost his keys.
Answer: C) He said that he was writing letters.
Answer: A) Jason said that he was writing a letter at the time.
Answer: B) She said that she was happy.
Answer: A) Came
Answer: B) Went
Answer: A) Would be-didn't go.
Answer: A) Past Perfect.
Answer: C) Mai told Hung that she had found a lot of mistakes in his plan.
Answer: A) Joe said that he had always wanted to see the Great Wall of China.
Answer: A) It's correct.
Answer: D) He had to go then.
Answer: B) Mary told her mother that she had eaten a bowl of noodles the previous night.
Answer: B) Was
Answer: B) Was only seventeen.
Answer: D) She hadn't travelled by underground before she had come to Tokyo.
Answer: B) Had visited.
Answer: A) He said he had finished his homework.
Answer: A) She said that she had seen the movie.
Answer: C) Did
Answer: C) Didn't like garlic.
Answer: A) They said that they hadn't gone to the party.
Answer: A) He said that she could speak five languages.
Answer: B) She asked me how often I went there.
Answer: C) He said that he would help me with my project.
Answer: A) He said he had studied for his exam.
Answer: C) She said that she had finished the book.
Answer: C) Had wanted.
Answer: C) Wear
Answer: B) She said she would go shopping.
Answer: B) Had done.
Answer: B) .was travelling.
Answer: D) There would be.
Answer: B) He said that his brother had gone to their house to help them.
Answer: A) He said he would go to the gym the next day.
Answer: C) Barbara said she had seen them at her parents' house the previous year.
Answer: A) Was looking for.
Answer: A) Is
Answer: B) He said he would go to school the next day.
Answer: A) THEY WEREN'T PLAYING FOOTBALL.
Answer: B) Had not gone / before.
Answer: A) He said, 'I have finished my homework.'.
Answer: D) Pratom 6 students were the best.
Answer: D) Wanted-then