I'm afraid I can't do well in the running race． I might let my classmates down．

． You don't need to push yourself too hard．（　　）

Where is Monica？ I can't find her anywhere．

She be in the library． She loves reading books when she is free．（　　）

Allan， I found a red eraser under your chair． Is it yours？

Oh， yes． It's ． Thank you， Mike．（　　）

What are you looking for？

I'm looking for the storybook you lent to me last week．（　　）

are the students in your class？

Most of them are only fourteen．（　　）

A．How longB．How manyC．How old