My brother is not old enough to go to school.

A. so young

B. too young

C. quite young

D. very young

　　A teacher was helping one of her kindergarten students put his boots on. He asked for help and she could see why. Even with her pulling and pushing the boots just didn't want to go on. By the time she d got the second boot on, she'd worked up a sweat. That's when the little boy said, “Mrs. Smith, they're on the wrong feet.”She looked, and sure enough, they were.

　　It wasn't any easier getting them back off and re-put upon the correct feet. That's when the little boy said, “These aren't my boots.”

　　She didn't say anything (Who wants to swear at a 5-year-old boy?) and managed to calm herself down, and together they worked them back off. He said, “they're my brother's. My mom made me wear them.”

　　Mrs. Smith didn't know whether to laugh or cry. But she gathered the courage one more time to put those boots on his feet again. “Now,”she said,“where are you mittens（连指手套）?”

　　“I put them in the toes（靴头）of my boots.”