对不起,老师,我回答不了你的问题,我英语非常差,我实在想不到单词Sorry, teacher, I can't answer your questions, my English is very poor, I can't think of a word.
2.为了跟避免尴尬,我练了好久才说好这句话
In order to avoid embarrassment, I practiced for a long time to say this sentence.
I'm very sorry, teacher. My English is not good enough that I can not think out a proper word.
In order not to make myself embarrased, I have practiced for a long time to speak this sentence well.