Ifit______rainheavily,thecitywouldhavegreattroublebecauseofitspoordrainagesystem.
最初提出 “交际能力 ”这一概念的是 ______。
If it ______ rain heavily, the city would have great trouble because of its poordrainage system.
教师要充分利用现代教育技术，拓宽学生学习和运用英语的渠道。
TheplayPygmalionlateradaptedtothemusicalcomedyMyFairLadywaswrittenby______.
