既是组织城市各种功能用地的“骨架”，又是城市进行生产活动和生活活动的“动脉”的是(

根据句意从方框中选择合适的单词并用其适当形式填空。(5分)

man  knife  I  that   class

小题1:Mom, help _______ find my friend Jim, please.
小题2:____are apples. These are oranges.
小题3:Mike and I are in the same grade, but we are in different _______.
小题4:—Whose _______ are in the desk?
—They are Ann’s and Dick’s.
小题5:—Who are the two ________?
—They’ re our teachers.