That ______ the case, we have to make some changes in our plan.A、isB、wasC、bein

游客2024-10-30 1

问题 That ______ the case, we have to make some changes in our plan.

选项 A、is
B、was
C、being
D、has been

答案 C

解析前半句为独立主格结构，表示原因。

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