year变形容词,piano变指人的名词,my uncle ——(work)on a new novel,

year变形容词,year's
piano变指人的名词,pianist
my uncle —is working—(work)on a new novel,
of the three boys,tom have—the most—(many)friends
“—Is—he—watering—trees?”“no,he isn't.he is watering the flowers”
PE is__a____physical education.
I here that Mike is___a___student in his class
the air here getting___worse__now than a few years ago