-i sit up abruptly.
-Shark(teacher's nick, just in case) began to take attendance after "hemming".<he did "ahem"
that's wrong kanji. it should be 咳払い. ^^

-if it were sewing set (that i forgot to bring), then it could've been settled by borrowing needle and thread,
but there's nothing i can do about this when it is the apron.

he can't borrow apron because usually students bring only one apron each.

-"...because the cat 'Mantarou' said to me that he wanted to see it".