1) due, pupil, mute, student.
2)1.a 2- 3a- 4-the the.
3) 1.is 2. are 3.is 4.are
4) brushes, windows, pianoes, gentlemen,shelves.
5) the most modern, so long, more comfortable, the prettiest
6)I'm talking to you. Listen to me.
This is your problem, not ours.
Those apples are bad. Don't eat them.
Where is she? I want to talk to her.
7)much, much.
9) eleven, threteen
10)1e, 2d, 3a, 4b, 5c