Which floor do you live _________? —The first floor. I live _________ Room 112. [ ]

The books on the chair __________ Mike’s, right?—Yes, they are.

_________ no doubt that a green campus plays an important role in the growth of students, both physically and mentally.

We are going to organize a talent show to ________ some extra money for charity.

Itsunny today, but ityesterday .