My family have ________ breakfast together every day.This helps us start a day well.（　　）

A．不填B．aC．anD．the

—I hear your brother will enter Tsinghua University this summer.

—Exactly，he was a born genius.He was able to read and write ________ the age of 4.（　　）

A．inB．onC．atD．of

Our monitor is ________.He never shows off before others.（　　）

A．organizedB．modestC．generousD．energetic

Five﹣star hotels can ________ first﹣rate service，making passengers feel at home.（　　）

A．provideB．preventC．protectD．prepare

Life is like a one﹣way race，________ treasure every moment as time cannot be won again.（　　）

A．soB．andC．orD．but