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Chinaalotofpeoplemovingtourbanareasinthelast20years.However,manymigrantslefttheirfamiliesbehind.A.sawB.seesC.hasseenD.hadseen

题目详情
China ______ a lot of people moving to urban areas in the last 20 years. However, many migrants  left their families behind.
A.saw B.sees C.has seen D.had seen
▼优质解答
答案和解析
C