【题目】________it was a waste of time and energy，but she didn't accept my advice.

【题目】You'll get a fine ________across the valley from the top of the mountain.

【题目】The speech given by that old professor seemed ________，which made the audience very bored.

【题目】They are trying to ________ the project to meet the deadline.

【题目】Beijing is ________to many key universities.

【题目】Most countries of the world have records of the great natural catastrophes that before.

【题目】He is really nervous. He ______back and forth all the night waiting for the results.

【题目】The town's water comes from the ________hills.

【题目】Anne couldn’t concentrate ______what she was doing while her friends were playing cards.