用方框中所给词的适当形式完成句子。 pronounce, different, mistake, face Tom came from the south of the country. In our language class, our teacher asked him ___ 1 __the word but his __ 2 ___ was strange. We all laughed. Then the next day we had to ___ 3 __ the fact that our teacher got very angry because we made many grammar __ 4 ___. We didn't know that the same word could be used __ 5 ___ in different situations.