教师角色扮演的先决条件是（ ）。

(单选题)With more forests being destroyed, huge quantities of good e (单选题)Why didn’t you tell me there was no meeting today? I ______ (单选题)What a pity! Considering his ability and experience, he ____ (单选题)The new technological revolution in American newspapers has (单选题)There is a general understanding among the members of the Bo (单选题)As a student, we should try our best to reach our final dest (单选题)There are toys to mainly ______ to little kids. (单选题)We are sailing on the lifeboat which won’t ______ be easy. (单选题)______ you ______ further problems with your fax machine, pl (单选题)Maria got off the bus, ______ her laptop on her seat.