单项选择题

______before we depart the day after tomorrow, we should have a wonderful dinner party.

A．Had they arrived
B．Would they arrive
C．Were they arriving
D．Were they to arrive
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单项选择题
Hellen Keller's ______ over deafness, blindness, and muteness was a miracle.
A．improvement
B．success
C．advance
D．triumph
单项选择题
He politely refrained himself ______ saying what he thought of her hat.
A．against
B．by
C．from
D．out
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