题目：
For English teachers _____ a more effective role in teaching, they must make every effort to raise students'
cross-cultural awareness. [ ]
A. to play
B. playing
C. having played
D. play
答案：
答案：A
For English teachers _____ a more effective role in teaching, they must make every effort to raise students'
cross-cultural awareness. [ ]
A. to play
B. playing
C. having played
D. play
答案：A
