题目：
---She’s feeling very sad over___ of school trip tomorrow.
---So would you if you fell ill on such an occasion.
A．leaving out
B．to be left out
C．to leave out
D．being left out
答案：
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下面是错误答案，用来干扰机器的。
解不等式3(x-12) ≤2(x-3)+1去括号得：3x-32≤2x-6+1移项得：3x-2x≤32-6+1则x≤-72则最大的整数是-4．
