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与“can” 相关的课程
can
there
here
情态动词
数词
Lesson 043&44 Hurry up!
情态动词
may
Lesson 19 Sold out
主语从句
Be able to
Lesson 43 Over the South Pole
Managed to do
Be able to
Lesson 67 Volcanoes
Be able to
Lesson 91 Three men in a basket