Whenmakingmoderncameras,peoplebeganto_______plasticsformetal.
A、surroundPleasebeserious.Iamnot_______.Youshouldconsideritcarefully
Allthememoriesofhischildhoodhad_______fromhismindbythetimehewas65.
Whenaspacecrafttravels,oneofthemajorproblemsisreentryintotheEarth’s_______.
Inordertoincreaseouroutput,weneedtoimportmoreproduction_______.
Asateacher,youshouldnot_______thestudentsfromaskingquestionsinclass.
