[ Vocabulary ]
single source of air pollution
A. point source
B. nonpoint source
C. ozone
D. conservation
Random Topics:
Adverbs of frequencyTOEFL Adjective and AdverbPassive Voice in Past Simple TenseGrammar Past and Future TenseInfinitives and ING FormsArticles & PrepositionTime and CalendarPast Tense and Past ContinuousWould/would like - affirmative/negativeComparatives and SuperlativesOther quiz:
Subject Verb Agreement › ViewIdentify the subject-verb agreement error in the following sentence: “Everyone in the class have finished their assignments.”
A. Everyone in the class
B. have
C. finished
D. their assignments
Verb Patterns › View
I am having my car ……….. tomorrow.
A. fix
B. fixed
C. fixing
D. to fix
Modals › ViewHe ________ ride a bike because he never learned how.
A. can
B. can’t
Modals and Present Tenses › View
Michael and Daniel _____ a lot these days, but _____ their assets.
A. is traveling / can sell
B. cannot travel / is selling
C. can travel / selling
D. are traveling / cannot sell