单项选择题

Ph. D. students who haven't completed their dissertations by the time their fellowships expire face a dif ficult

A．corner
B．dilemma
C．perplexity
D．bewilderment
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单项选择题
______ touched me most was that the poor old lady donated all her savings to support one dropout.
A．That
B．It
C．Which
D．What
单项选择题
In no case ______ ever betray your better nature.
A．should you
B．you should
C．shall you
D．you shall
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