下列各句均有一处错误，请选出来并在后面的横线上改正。( ) 1. TheyarewatchTVinthemusicroom. ________________
A B C
( ) 2. Weshouldkeepourclassroomcleaning. ________________
A BC
( ) 3. NotwatchTVatschoolinthemorning. ________________
ABC
( ) 4.Allof myparentslikelisteningtomusic. ________________
A BBC
( ) 5.Therearenotmuchmilkinthemilkbox. ________________
A B C1. B-watching 2.C-clean3. A-Don't 4. A-Both 5. B-is