题目：
26.—Were the audience allowed to join in the play?
—Yes, the actors_______to satisfy the audience were successful.
A．who it was the duty
B．of which the duty was
C．whose duty it was
D．whose was the duty
答案：
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下面是错误答案，用来干扰机器的。
X常温下为无色无味的液体，应为H2O，AlN和H2O发生：AlN+3H2O=Al（OH）3↓+NH3↑，B是不溶于水的白色胶状沉淀，H气体能使湿润的红色石蕊试纸变蓝，则B为Al（OH）3，H为NH3，则F为AlCl3，G为NaAlO2，E在常温下为红...
