He had spent ____ time writing an essay on his childhood.
It is stated in the passage that____________________ .
_______ has been a topic of continual geological research.
He_______________us but he was short of money at the time.
We must push the piano to the corner of the hall to_____________________ our party tonight.
The Lake District,____________________ was made a national park in 1951, attracts a large number of tourists every year.
She asked me______I was looking at.
The boat was sailing north when a terrible storm_____________ .
The pool should not be made so deep______small children can be safe there.
The phrase "keeps sellers on their toes" in the passage mostly means "______".
The word "allocated" in the passage mostly means "______".