填空题

______ (他们最担心的) is their 30 year old daughter who is still single.

【参考答案】

What worries them most
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填空题
Doctors use medical histories to help diagnose problems and ______ (为病人开出治疗处方).
单项选择题
A．denseB．numerousC．slightD．tiny
A．dense
B．numerous
C．slight
D．tiny
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