Biochemists have solved many of the mysteries about photosynthesis, the process ___ plants make food.
We all agree that she is____________________ student in our class.
______ his brother, Mike is active and friendly.
It is stated in the passage that____________________ .
I am sorry I have no time at present to____________________ detail of our plan.
_______ has been a topic of continual geological research.
Michael looked deeply hurt and surprised when_____________________ .
According to critics of globalization, several developed countries have become rich because of
The boat was sailing north when a terrible storm_____________ .
Only one of our gifted students______to participate in the final competition.
She asked me______I was looking at.