题目内容
Lesson ____ is so difficult that it will take them _________ to learn it.
A. Sixth; two and a half days B. Six; two days and half
C. Sixth; two and a half day D. Six; two days and a half
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题目内容
Lesson ____ is so difficult that it will take them _________ to learn it.
A. Sixth; two and a half days B. Six; two days and half
C. Sixth; two and a half day D. Six; two days and a half