[ Grammar and Vocabulary ]
Water pollution is a result of dumping pollutants such as detergents, pesticides, oil, and other chemicals in rivers, which makes the water unclean.
A. substances
B. stuffs
C. contaminants
D. wastes
Select your answer:
Random Topics:
PrepositionAdverb of FrequencyModals and InversionQuantifiersAdjectives & AdverbsSubjunctivesFigure of SpeechArticles - rulesPresent Simple ProgressivePast Perfect or Past Perfect ContinuousOther quiz:
Simple Present Tense › ViewMay is a talented pianist and she often …….. at concerts.
A. perform
B. performs
Grammar › View
After he ___ the letter, he felt much better.
A. had read
B. has read
C. reading
D. readed