填空题

These books are (useful)______than those for beginners of English.

【参考答案】

more useful
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单项选择题
A．Teacher and student.B．Nurse and patient.C．Lawyer and client.D．Boss and secretary.
A．Teacher and student.
B．Nurse and patient.
C．Lawyer and client.
D．Boss and secretary.
填空题
a number of
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