[ Vocabulary ]
An ______________ is a procedure carried out to carefully observe, study or test something in order to learn more about it.
A. investigation
B. science
C. observation
D. evidence
Select your answer:

Random Topics:
Cardiology ServicesActive and Passive voiceModals "Should"Verbs + Infinitives / GerundsGrammar ElementaryConjunctions, Interjections and Sentence TypeComparativesPreposition FormComparative AdverbNoun QuantifiersOther quiz:
Adverb Clauses › ViewBy the time I go to bed tonight, I _____ my work for the day.
A. will finish
B. have finished
C. will have finished
D. finish
Grammar › View
Identify the participial phrase.
Placing her money on the counter, the little girl smiled at the clerk.
A. Placing her money
B. Placing her money on the counter
C. smiled at the clerk
