Call 119 _____ mobile phone right now 应填什么是A.in B.by C.on D.with 中的哪一个,答案是by,我记得有on the mobile phone这词组，

mobil 手机是不是可数名词A：Whose _____ ______(手机）are they?B: They are ______ ______ _______(他们的手机）我认为应该用mobil phones ,而答案却是mobil phone,网友们可不可以解释一下为什么,好吗? 请问Mobil是什么意思? Mobil fluld 是什么意思 smart mobil phones是什么意思 mobil kontrol是什么意思 Thanks for _____ (call) .是填 “call”还是填 “calling”? we call saturday and sunday _____(week) She has a friend _____(call)Mary please tell tom _____(call) me back. Henry,_____(call) me after the vacation. Can you _____ (call)me tomorrow morning? My friend _____(call) me this morning. You can ask him _____ (call) you. Jenny _____(not call) me last night. Call 119 _____ mobile phone right now 应填什么是A.in B.by C.on D.with 中的哪一个 call call.