【正确答案】
C
【答案解析】[解析] assemble:集合、聚集。appear:出现、露面,例如:We've programmed you to appear on the stage next week.我们安排你在下星期出场演出。walk:行走,例如:She turned and walked away.她转身走开了。gather:集合、聚集,例如:In the evenings,we gathered around the fireplace and talked.晚上,我们聚在火炉边聊天。combine:合并,例如:to combine theory with practic,理论联系实际。