Here are the correct answers for each question:
Question 16: Why don't we go on the coach? It is_______cheaper than the train.
Answer: C. quite a bit
Question 17: A quick look would reveal that France has twice_______computers.
Answer: A. as many televisions as
Question 18: The_______source of power in 1970 was from natural gas with almost 25%.
Answer: B. second most important
Question 19: Staying in a hotel costs_______renting a room in a dormitory for a week.
Answer: B. twice as much as
Question 20:_______a person gets,_______the chance they will develop a disease that harms the brain.
Answer: C. The older - the greater
Question 21: People are becoming_______aware of healthy eating, exercise, and relaxation, and want to incorporate them into their daily lives.
Answer: C. more and more
Question 22: The more she practices,_______she becomes.
Answer: C. the more confident
Question 23: The more you talk about the situation,_______.
Answer: B. the worse it seems
Question 24: The older you are,_______.
Answer: B. the more worried you may become
Question 25: Sound comes in waves, and the higher the frequency,_______.
Answer: B. the pitch is higher
Question 26: The more you have tried to edit the article,_______.
Answer: C. the better it becomes
Question 27: The better the weather is,_______.
Answer: D. the more crowded the beaches get
Question 28: The country is rapidly losing its workers as_______.
Answer: B. more and more people are emigrating
Question 29:_______you study for these exams,_______you will do.
Answer: A. The harder - the better
Question 30: The more waste paper we recycle,______.
Answer: D. the more trees we preserve