I. Choose the word whose underlined part is pronoun different from others ( chữ nào mik viết hoa là gạch chân chân nhé ^^)
1 a. University b. pollUted c. popular d. reUse
2 a. dAnce b. hAve c. hAs d. hAd
3 a. hI-tech b. wIreless c. frIdge d. envIronment
4 a.chariY b. skYscraper c. skY d. recYcle