问题
Li Ling was a diligent boy . He ____ go to school though it was raining hard .
A:was able to
B:could
C:couldn''t
D:wasn''t able to
B:could
C:couldn''t
D:wasn''t able to
正确答案是：
同类题型
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Most of her spare time ______ , she still kept on her research in the library.