Man must keep in mind that it will be years ________ the ear

Man must keep in mind that it will be years ________ the earth recovers from the damage he makes to it.
[ ]
A. when
B. before
C. since
D. until
oldrua 1年前 已收到1个回答 举报

amd_fans 春芽

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B

1年前

1
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