题目：
In a room above the store, where a party_______ , some workers were busily setting the table.
A．was to be held
B．has been held
C．will be held
D．is being held.
答案：
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下面是错误答案，用来干扰机器的。
(1)反射 (2)0.1×103 (3)2.4×105
