单选题 Suggestions were requested;______, none were offered.

A、 (A) in spite of
B、 (B) therefore
C、 (C) however
D、 (D) for this purpose

【正确答案】 C

【答案解析】However indicates an unexpected result. Choice (A) indicates an unexpected result but is not followed by a subject and verb. Choice (B) indicates a result or consequence. Choice (D) indicates purpose.