21. They could not go to the theater together because his free time never ______ with hers.
A. collide B. comply C. coincide D. cope
collide 碰撞，相冲撞
collision 冲突
bump 撞击
bump into 邂逅，偶然遇到
comply (with) 遵守（法律法规）
adhere (to) 坚持，遵守，粘着
conform (to) 符合，遵守（法律法规）
cope (with) 处理
