单选题 When the directors ______ a profit, they'll be satisfied.
【正确答案】 C
【答案解析】See is the correct present tense verb in a future adverbial time clause. Choice (A) is the future tense and impossible in an adverbial time clause. Choice (B) is the present continuous, and see is usually a stative verb. Choice (D) is the present perfect continuous, and see is usually a stative verb.