When making modern cameras , people began to_______ plastics for metal.
A、surroundD
暂无解析
Withthehelpofthegovernment,alargenumberofpeople---_______afterthefloodin1991.
Healwayshasalotof_______ideasinhismind,andsometimeswedonotevenknowwhatheisthindingabout.
Pinetreesareusuallybelievedto_______coldweather.
Theengineersinthislabspentseveralweeks_______theirplansforthenewbicycle.
Asateacher,youshouldnot_______thestudentsfromaskingquestionsinclass.
