A cellphone _____ a camera by most young people in China.

fter the mud-rock flow hit Zhouqu,Gansu Province, many soldiers came to the ______ as many people were trappedunderground.

Where did you ______ our chemistry teacher?—– It was in the supermarket ______ I saw him.

The street was too noisy and we couldn’t _______ the singer clearly.

the construction of theQinghai-Tibet Railway, 33 migration overpasses have been made_______for herdsof Tibetan antelopes to go through their breeding grounds.