单选题 The paychecks will be delivered ______they arrive from the accounting department.

A、 (A) before
B、 (B) soon
C、 (C) when
D、 (D) during

【正确答案】 C

【答案解析】When indicates a time sequence, especially where one action is influenced by another. Choice (A) is not logical. Choice (B) is not the correct form as soon as. Choice (D) cannot be followed by a subject and a verb.