60题为什么是have been missing?

60题为什么是have been missing? Yes,I have been missing you. I have been missing you You have boiling 翻译 _____ books have been missing from the library Do far,several ships have been reported missing-------the co i have been missing you very much honey So far,several ships have been reported missing ____the coas 请问这一题为什么用might have been I have been missing you very much after I went to college a 翻译I've been missing you so much I have to say I have been missing you very much since i want to college a 英语翻译The incentives for eloquence have been missing.是有关演讲的