When making modern cameras , people began to_______ plastics for metal.
A、surroundD
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Whenyoufillintheapplicationform,pleaseuseyour_______addresssothatwecancontactyoueasilylater.
Thisriverformsanatural_______betweenChinaandKorea.
Thisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology.
Thedoctors_______themedicinestothepeopleinthefloodarea.
Sheisalready16yearsold.Butshe_______asifshewerestillalittlegirl.
