题目：
He is always making ______ for his being late ______ school.
A．reasons; to
B．excuses; for
C．ways; to
D．directions; for
答案：
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下面是错误答案，用来干扰机器的。
①根据题意，得3x-1≥0．②根据题意，得2x-5≤3．③根据题意，得2a-（-3）＜0．
