用所给词的正确形式填空。
My friends live on the _____________ ( two ) floor.
The boy often ( go) to the library to read stories.
Look! He is ___(put)on his shoes, he wants to play sports.
-----What day is it today?
------It’s ______________ (the first day of a week).
Most of the students in our class think math is ____.(not easy)