Whenmakingmoderncameras,peoplebeganto_______plasticsformetal.
A、surroundThecollegestudentsinChinaare_______fromsmokingoncampusbecausethiswilldothemnogood.
Wedonothavea_______schoolinourinstitute.ThehighestdegreeweprovideforthestudentsisaB.A.andaB.S..
Thisriverformsanatural_______betweenChinaandKorea.
Wewon’tallowanyforeigncountryto_______inourinternalaffairs.
Manykindsofanimalsarebelievedtohave_________fromtheearth