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>

collide 碰撞，相冲撞

collision 冲突

bump 撞击

bump into 邂逅，偶然遇到

</collide>

<comply>

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）

</comply>

cope (with) 处理