单项选择题

A．She has been working a lot recently.
B．She has been taking care of her sick mother.
C．She has been taking two night classes.
D．She has been looking for a new job.
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单项选择题
A．Rules of playing soccer are confusing.B．The man needn’t learn the rules of English.C．Languages can not be learned very well in classes.D．Rules are important for adults in learning languages.
A．Rules of playing soccer are confusing.
B．The man needn’t learn the rules of English.
C．Languages can not be learned very well in classes.
D．Rules are important for adults in learning languages.
单项选择题
A．Graduate students.B．Undergraduate students.C．Professors.D．Library employees.
A．Graduate students.
B．Undergraduate students.
C．Professors.
D．Library employees.
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