Scott found_________ difficult to solve the problem.

—What does Mrs Li teach?—She is ________ English teacher, and she teaches __________ English very well.

______ are my sister’s pencils and ______ my ruler.

The story          is very interesting, so most of us like it.

－ I need something for cutting the paper.－ Oh, you want a knife? OK, I’ll get ______ for you.