单项选择题

The results from the Internet service ______.

A．are done in a week
B．aren't very clear
C．are done in 24 hours
D．take a long time
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Sometimes it is difficult ______ the skills you have.
A．to play
B．abilities
C．to recognize
D．recognizes
单项选择题
______ are activities a person does well.
A．Sentences
B．Skills
C．Potatoes
D．Examples
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