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Education in many countries is compulsory________the age of 16.
There has been a great increase in retail sales,_____________________ ?
It is stated in the passage that____________________ .
The packages___________________ so that it would be easier to carry them.
_______ has been a topic of continual geological research.
Supporters of free-market globalization point out that_____________________ .
Michael looked deeply hurt and surprised when_____________________ .
We all agree that she is____________________ student in our class.
______ his brother, Mike is active and friendly.
The phrase "keeps sellers on their toes" in the passage mostly means "______".