Beijing is cold this time . You need warm clothes if you go there. A. of the year to pa

问题补充：

Beijing is cold this time . You need warm clothes if you go there.

A. of the year, to pack

B. of year, packing

C. of year, pack

D. of year, to pack

答案：

A. of the year, to pack

B. of year, packing

C. of year, pack

(答案→)D. of year, to pack

解析：句意：每年的这个时节北京是很冷的。如果你去那里你需要带上暖和的衣服。This time of year意为“一年中的这个时节”；need to do意为“需要做某事”；故选D。