Rocks can be broken apart by water that seeps into the cracks and freeze in low temperatures .
The Lake District,____________________ was made a national park in 1951, attracts a large number of tourists every year.
_______ has been a topic of continual geological research.
The examination was not very difficult, but it was_____________________ long.
______ his brother, Mike is active and friendly.
She asked me______I was looking at.
There has been a great increase in retail sales,_____________________ ?
Long ago, women were_________to vote in political elections.
Only one of our gifted students______to participate in the final competition.
__________ John Kennedy was elected president, he was the youngest American President ever.
I am sorry I have no time at present to____________________ detail of our plan.