Didn't you know that he passed away two years ago.

Forks and chopsticks became popular because they could easily handle hot food.

It was Mr Smith that told me how to use that machine.

In such countries as Norway and Finland, they have lots of snow in winter.

TV is harmful in that it keeps your mind in passive state.

This jet travels about three times as fast as the speed of sound.

In this secret code, each number stands for a letter of the alphabet.

alphabet n.[C]字母系統，字母表，全套字母；表音（或表意）符號系統