在下列各句的空格内填上一个适当的完整的单词，该词的首字母已给出。

小题1:Talking with her is like playing the lute to a cow. I don’t want to w____ my time.

小题2:Believe what I’ve told you! I never tell lies, I am h_______.

小题3:Tim was so l_____ that the bus was about to leave when he arrived there.

小题4:I bought a new iPhone yesterday, it c______ me more than 5,000 yuan.

小题5:It’s sad that all 239 passengers in the flight of MH370 lost their lives, i     154 Chinese.

设某计算机系统有一个CPU、一台输入设备、一台打印机。现有两个进程同时进入就绪状态，且进程A先得到CPU运行，进程B后运行。进程A的运行轨迹为：计算50ms，打印信息100ms，再计算50ms，打印信息100ms，结束。进程B的运行轨迹为：计算50ms，输入数据80ms，再计算100ms，结束。试画出它们的时序关系图[可以用甘特图(Gantt Chart)]，并说明：

进程A运行时有无等待现象若有，在什么时候发生等待现象