问题描述：
英文 前面过去式 后面未来式
She was so frightened that she ________________________.
A.couldn't speak
B.won't be able to speak
两个只能选一个,B是成立的吗?这样前面过去式,后面未来式可以吗
还是wouldn't才是对的?
She was so frightened that she ________________________.
A.couldn't speak
B.won't be able to speak
两个只能选一个,B是成立的吗?这样前面过去式,后面未来式可以吗
还是wouldn't才是对的?
问题解答：
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