They had wanted to help but ____ get there in time.
They had wanted to help but ____ get there in time.
A、can’t
B、couldn’t
C、don’t
D、won’t
【正确答案】：B
【题目解析】：couldn't 是 can't 的过去形式； 通过 wanted可以分析出这句话说的是过去的情况。他们“不能”准时到达这个“不能”是过去的“不能”.
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