How about the pollution in the countryside —Luckily, it’s not as serious as_______ in the big cities.

Carelessness always contributes _______ car accidents. Therefore, drivers are advised to concentrate their attention _______ driving.

The roof fell ______ the PLA men had time to rescue the child trapped in the house

China is _________Asian country while France is_________ European country.

He is delighted to have ___ the examination.