单选题 Harvard is committed to______ongoing communication and cooperation as project plans are______
A. maintain, shaping B. maintaining, shaping
C. maintain, shaped D. maintaining, shaped

【正确答案】 B

【答案解析】[解析] be committed to doing意为“致力于”。shape意为“进行，进展”，这里是不及物动词，故正确答案为B。