Ⅰ.Introduction

●One of the {#blank#}1{#/blank#}public transportation systems in the world; has been underneath the city for {#blank#}2{#/blank#}now.

Ⅱ.What I did and my feelings

●Standing at the window of the{#blank#}3{#/blank#}, dreaming through the great network of tunnels, watching the red and green lights go by.

●Not any fear—only {#blank#}4{#/blank#} ; like a secret, a child's game.

Ⅲ.What people like most about subway

●They like the magic feeling of {#blank#}5{#/blank#} fast in a train underground.