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Theyhaven'tseeneachotherfortenyears,buttheystillkeepintouchwitheachotherbyphone.A.constantB.instantC.cautiousD.consistent

题目详情
They haven't seen each other for ten years, but they still keep in ________ touch with each other by phone.
A.constant
B.instant
C.cautious
D.consistent
▼优质解答
答案和解析
A