单项选择题

I've always been cautious about giving people my phone number.

A．afraid
B．frightened
C．careful
D．rational
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At the birthday party, Lily kissed her father to express her thanks for his lovely present.
A．altitude
B．attitude
C．gratitude
D．latitude
单项选择题
The huge Olympic Park will be built outside the city.
A．big
B．wonderful
C．significant
D．fantastic
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