we always have to clean the classroom in the end of the semester.———— ———— ———— the term ，we always clean our classroom 。 怎么样做啊？In the end of the semester,we always have to clean the classroom不对啊。是———— ———— ———— the term ，we always clean our classroom 。the 去掉不就行了吗，不需要特指，那就不用定冠词the