单选题 It's important that the clients ______interested.

A、 (A) are seeming
B、 (B) will seem
C、 (C) is seeming
D、 (D) seem

【正确答案】 D

【答案解析】The clients are the ones who seem interested, so the simple form of the verb is used. Choices (A) and (C) are participles, which are rarely used with stative verbs. Choice (B) is the future tense.