填入所给名词的适当形式（动作希望能快一些）

填入所给名词的适当形式（动作希望能快一些）
1.we have___(pen).
2.this is an ___(apple)
3.where is the ___(pupil)
4.there are ____(watch)
5.are you____(teacher)?yes,we are.
6.he has some____(ink)
7.the ____(shelf)
8.that ____(girl)is mary.
9.many_____(library)are in shanghai.
10.what colour are the____(flag)