Leave All状态机只是负责当Leave All定时器超时以后,产生Leave All消息。任何实体接收到Leave All消息后,都重新启动定时器,并且产生新的Leave All消息。()

I commanded that heat once.A．leftB．leavesC．leaveD．to leave

_____turn green in spring.A．LeafB．LeafsC．LeaveD．Leaves

Li Ming is _________ for China.A. leave B. leaves C. leaving

If you really have to leave during class, you’d better leave____ the back door. A．forB．atC．byD．out

—________are they leaving for Beijing ?— They are leaving next week.[ ]A. When B. WhereC. WhichD. What

You don’t need ____ so early.A．leaveB．leftC．to leaveD．leaving

I would rather Ted ____ here early.A．leaves B．to leave C．left D．has left

When ______ leave for Japan？” “When ______ leave for Japan is kept secret.”A．they will, will theyB．will they, they willC．they will, they willD．will they, will they

Dried leaves continue to hang on the branches of some trees_____ the new leaves appear.