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callsb.onmobilephone还是callsb.bymobilephone?-Dad,lookatthebuilding.It'sonfire.-Call119mobilephonerightnow.A.inB.by.C.onD.with

题目详情
call sb.on mobile phone还是call sb.by mobile phone?
-Dad,look at the building.It's on fire.
-Call 119__ mobile phone right now.
A.in B.by.C.on D.with
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答案和解析
on