单项选择题

Practically all species of animals communicate either through sounds or through soundless codes.

A. Simultaneously
B. Almost
C. Absolutely
D. Basically
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单项选择题
John is collaborating with Mary in writing a book.
A. cooperating
B. merging
C. combining
D. associating
单项选择题
I suppose he will give in eventually.
A. in a way
B. in due course
C. in the end
D. in any case
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