Question 7: Find mistakes and correct As soon as they arrived at the hotel they took the elevator room and straight to bed because they were so tired.
Parallel structure: A and/but/or B A and B are congruent, congruent.
There should be a verb after “and” with “took” in front, and “straight” is a preposition, not a verb.
Edit: straight to bed=> went straight to bed
As soon as they got to the hotel, they took the elevator to their room and went straight to bed because they were so tired