单项选择题

A. Robert Wilson isn’t at home at this moment.
B. Mr. Wilson’s line is busy.
C. Robert Wilson can’t come to the phone right now.
D. Robert Wilson is busy now.
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填空题
D
单项选择题
A. Those who know how to program computers. B. Those who get special aid from their teachers. C. Those who are very hardworking. D. Those who have well-educated parents.
A. Those who know how to program computers.
B. Those who get special aid from their teachers.
C. Those who are very hardworking.
D. Those who have well-educated parents.
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