"thEy hAD lArgE rEsourCEs oF Compulsion At thEir DisposAl.' mEAns thAt thE tEAChErs______.
A．hAD triED to suspEnD him From sChool sEvErAl timEs
B．hAD physiCAlly punishED him quitE A lot
C．hAD imposED upon him mAny oF thEir iDEAs
D．hAD triED to ForCE him to lEArn in mAny DiFFErEnt wAys