I struggle for words when asked a sudden question.
当被突然提问时，我绞尽脑汁想出答案。
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今天的几个句子是有关学习的：1.Im really poor in Math.我的数学很糟糕。2.I have trouble with computer.我学计算机课有困难。3.God, I only missed tweo classes and I'm already out of it.天哪，我才缺了两节课就跟不上了。4.That guy is tough nut.I guess this class is a bear.那个老师很难缠，我想这门课很难学。