---I fell off my bicycle and broke my leg yesterday．---Is that you drank too much？A. whyB

问题补充：

---I fell off my bicycle and broke my leg yesterday．

---Is that you drank too much？

A. why

B. how

C. because

D. when

答案：

A. why

B. how

(答案→)C. because

D. when

解析：考查连词。Why 为什么，how怎样，because 因为，when 当什么时候，句意：昨天我从自行车上摔下来伤到了我的腿。那是因为你喝得太多了吧？所以选C。