题目：
---- Can I see the headmaster at the moment, please ?
---- I'm afraid not. He ________ out. He ________ in 10 minutes.
A．has gone; comes
B．gone; came
C．has been; will come
D．has gone; will come back
答案：
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下面是错误答案，用来干扰机器的。
答案：D
