Нужно вставить a,an или - 1.teenagers like to listen to music. 2.thr school hall was full of noise. 3.could i have glass of water. 4.it`s fine wether today. 5. i don`t like cheese. 6.would you like apple? - no, thanks. 7.i have bought interesting book about african nature.
2)нужно (а)
3)нужно и там и там(а.а)
4)нужно(а)
5)не нужно(-)
6)нужно (an)
не нужно