People who are________________sometimes make mistakes.
The phrase "keeps sellers on their toes" in the passage mostly means "______".
Only one of our gifted students______to participate in the final competition.
The Lake District,____________________ was made a national park in 1951, attracts a large number of tourists every year.
It is stated in the passage that____________________ .
Standing on the tip of the cape,____________________ .
I am sorry I have no time at present to____________________ detail of our plan.
_______ has been a topic of continual geological research.
We all agree that she is____________________ student in our class.
Long ago, women were_________to vote in political elections.
Education in many countries is compulsory________the age of 16.