My PC is out of order, the experiment has to be put off.A、beingB、wasC、beD、has

游客2023-12-30 11

问题 My PC is out of order, the experiment has to be put off.

选项 A、being
B、was
C、be
D、has been

答案 A

解析本题两个分句之间没有连接词，逗号不能连接两个句子，因此可以将前面半句改为独立主格结构，表原因，A符合要求。

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