Con bò biết bay

Yesterday, I _______very busy.

• was

• were

• had

• get

Choose the word main stress pattern is placed differently

• contaminate

• radiation

• pollution

• untreated

My mother has to measure blood __________ every month

• billboard

• pressure

• groundwater

• earplug

Parents should teach children not to __________ wastes on the road

• lutter

• make

• litter

• cause

His grandfather made him __________ hard when he was small

• study

• to study

• studying

• studied

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

• will take

• took

• taken

• would take

Pollutions are harmful __________ human health

• with

• to

• on

• at

__________ water resulted in the death of many aquatic animals.

• Contaminate

• Contaminated

• Contamination

• Contaminating

Have you ever heard about the __________ of radioactive pollution?

• affects

• effects

• harm

• poison

What would you do if a factory in your neighborhood __________ untreated water into the river?

• dump

• dumped

• dumping

• dumption