couldn't 是 can't 的過去形式； 通過 wanted可以分析出這句話說的是過去的情況.
他們“不能”準時到達這個“不能”是過去的“不能”.
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
為什么選B
A can"t
B couldn"t
為什么選B
英語人氣：443 ℃時間：2020-03-20 14:53:36
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