There are a number of farmers now when sell down stock and close down
单选题There are a number of farmers now when sell down stock and close down for dry Periods but this requires a certain equity level.
A.while
B.who
C.which
D.on which
参考答案：B
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答案解析：定语从句。本题中定语从句与先行词farmers被now分开，但细读一下就能看出，因此应该用指代人的who来引导定语从句。
