VOCABULARY & GRAMMAR

Do you know what is the cause __________ pollution?

• of

• in

• on

• for

My mother has to measure blood __________ every month.

• billboard

• pressure

• groundwater

• earplug

_________ pollution is harmful or annoying level of noise, as from vehicles, industry activities, etc.

• light

• visual

• soil

• noise

Parents should teach children not to __________ wastes on the road.

• litter

• poison

• cause

• measure

I can’t hear your voice __________ I’m wearing an earplug.

• although

• due

• however

• because

His grandfather made him __________ hard when he was small.

• study

• to study

• studying

• studied

This picture __________ the contamination of ground water.

• illustrate

• illustrating

• illustrates

• illustrated

Could you list some non-point source __________?

• pollution

• pollutants

• polluting

• polluted

Scientists has just come up __________ a solution to hearing loss.

• to

• on

• with

• down

If we dump a plastic into the ground, it __________ a long time to disappear.

• will take

• take

• took

• takes