完型填空（共10小题；每小题1分，满分10分）
John is a famous writer now. But he says he was not a ______    student when he was young. He is often late for ___   _ and doesn't like doing his homework. Sometimes, he sleeps in class while the teacher is teaching. He doesn't understand much, ______   he always thinks he understands(懂得) everything. One day the teacher ___   _ the students a question, “When Jack is ten years old, _____  _ brother Bob is twenty, Jack is fifteen now and_  ____ is his brother Bob?” John says, “That's easy. Bob is twice as old as Jack, so he is now thirty.”
Another time, the __  ____ in a science class asks, “When it thunders(打雷), ____  __ do we always see the light before we ___   __ the sound?”
“But, Miss,”says John quickly, “don't you _____  _ our eyes are in front of our ears?”

A．good B．tall C．rich D．fat

A．sleep B．lunch C．class D．play

A．so B．and C．or D．but

A．sends B．asks C．tells D．finds

A．your B．my C．his D．her

A．how many B．how old C．what D．who

A．teacher B．farmer C．nurse D．policeman

A．what B．when C．where D．why

A．break B．make C．hear D．smell

A．read B．hope C．study D．know