[ Grammar ]
The village’s drinking water was _____ with poisonous chemicals.
A. contaminated
B. contamination
C. contaminant
D. contaminating
Select your answer:
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Vocabulary › ViewA method for collecting information by observing a phenomenon in action.
A. variability
B. observational study
C. quantitative data
D. categorical data
Grammar › View
Rita is 20 years old. Sam is also 20.
A. Rita is as old as Sam.
B. Rita is older than Sam.
C. Sam is the youngest Rita.
D. Rita is the oldest than Sam.
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