单项选择题

Millions of Americans flock to their drugstores to buy vitamins and minerals, ______ that these pills can help prevent serious illnesses.

A. convincing
B. convinced
C. to convince
D. to be convinced

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单项选择题

Becoming aware of our mother’s age, not just in numbers of years but ______ her psychological and physical state, often’helps us to understand her better.

A. in spite of
B. in charge of
C. in terms of
D. with respect to

单项选择题

The only thing ______ really matters to the parents is how soon their children can return home

A. what
B. that
C. which
D. this

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