[ Vocabulary ]
___________ is an investigation in which all of the conditions are controlled.
A. control
B. experiment
C. scientific method
D. variable

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How much and how many-ed/-ing AdjectivesWh-QuestionNoun, Quantifiers and SuffixesEnglish for TourismGrammarSpellingFuture SimpleThe Present Progressive TenseModals and TensesOther quiz:
Grammar › ViewThe sunsets here are always stunning, __________ (Add the appropriate Question Tag)
A. aren’t they?
B. does it?
C. doesn’t it?
D. are they?
Vocabulary › View
What does “lucrative” mean?
A. Profitable
B. Nonremunerative
C. Unprofitable
D. Gainful
Vocabulary › ViewTo cut off an area by means of troops or warships to stop supplies or people from coming or going out.
A. blockade
B. arsenal
C. armistice
D. abstain
Grammar › View
While the waiter ________________ up the pieces of glass he ________________ his finger (pick, cut)
A. picked – cut
B. was picking – was cutting
C. was picking – cut
D. was picking – cutted
