全部 单选题 问答题

• Allhertime________research,the
• Duringclass,theteacherdrawsafl
• Hegaveusanodandmurmureda“Yes”a
• Ateachershowedstudentsanexampl
• Thiscrophassimilarqualitiestot
• Inimplementationofteaching,toa
• Whatshouldtheteachertrytoavoid
• Whileteaching,weshouldkeepourc
• Whatkindofsoundscanwemakewhent
• Inwhichofthefollowingsituation