Допиши предложения
(Exampel- We usually go to the zoo on Sunday, don't we?)
 1) He's got many problems with Maths......?
 2) There aren't file pictures on the wall.....?
 3) They can't sing English songs,......?
 4) She never goes to school on Saturday.......?
 5)P.E. class isn't on Thursday,........?
 6) He must study better,.....?