单项选择题

______, strong periods in an economy give way to recessions, which has been justified by the data of the past two centuries.

[A] Invariably
[B] Permanently
[C] Consistently
[D] Unchangingly

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单项选择题

I like getting myself occupied with chores ______ the time away.

[A] more than to idle
[B] than idling
[C] rather than to idle
[D] more than idling

单项选择题

At that moment when he was told that the radio station had found his son for him, it was all he could do ______.

[A] cry
[B] crying
[C] to cry
[D] cried

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