casts 测验

中塑像

问题 1 :

The area near the stream was covered with little bubbly worm casts.

casting
casts
cast

问题 2 :

Reese Palley, Unlikely Passages (1998) p. 39. We are anesthetized against most terrors of land. ... HydroPhobias begin on land long before casting off. But once at sea, fear quickly is lost.

casting
casts
cast

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