1Mysisteristhreeyear的精選

問題詳情：用所給詞的適當形式填空。 1.Mysisteristhreeyears_________（old）thanI. 2.LessonFiveisnotso_______（difficult）aslessonFour. 3.Whichis________（cheap）,thisoneorthatone? 4.Hesings_______（well）inhisclass....