单项选择题

Three - fourths of the suffrage of the earth（）sea.

A、 are
B、 were
C、 is
D、 has been

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单项选择题
Writing is a slow process, requiring（）thought, time, and effort.

A、 significant
B、 enormous
C、 considerable
D、 numerous
单项选择题
There are very few rides of grammar（）.

A、 that are not with exceptions
B、 but have exceptions
C、 not having exception to them
D、 not with exception to them
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