English is the ___________ language of many countries such as the US, the UK, and Australia. A. international B. usual C. popular D. official

The road in front of my office is always __________ when it rains heavily. A. to flood B. flooding C. flood D. flooded

__________ is a storm in a desert during which strong winds blow sand blow into the air. A. sandstorm B. thunderstorm C. cyclone D. hurricane

The Glastonbury Festival is a famous (celebrate) ______________ of music in England.

After I __________ in the room, she left. A. come B. had come C. came D. will come

A. happened B. helped C. burned D. bored

Poisonous ___________ from factories can kill a lot of wildlife animals. A. things B. animals C. chemicals D. nations

When a volcano __________, hot gases and lava run down. A. blows B. erupts C. throws D. escapes

If you are polite to others, they (will be/ are) nice to you).

Air __________ is causing many environmental problems in our cities today. A. pollute B. pollution C. polluting D. polluted

If the weather is fine, we (goes/ will go) camping tomorrow.

Noise is considered as (environment) ___________ pollution.