20.---Mary has been trained hard for the last two years.---______she did so
问题描述：
20.---Mary has been trained hard for the last two years.---______she did so
20．---Mary has been trained hard during the last two years.
---______she did so well at the sports meeting yesterday.
A.No doubt B.No question C.No wonder D.No problem
答
C.No wonder "难怪“为什么选C，这句话是什么意思？---玛丽在过去的两年中一直在刻苦训练
---【难怪】她在昨天的运动会上有出色的表现