She ___speak English before,but now she ___.

问题描述:

She ___speak English before,but now she ___.
填空

She (couldn't,不能) speak English before,but now she (can,能).
以前她不会说英语,但现在她会说了.
前一句是一般过去时态,后一句是一般现在时态.前面是能,后面是不能这样好像有点不合逻辑。如果题目是这样的话,就先填could,后填can't。