[ 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

Random Topics:
Comparative and SuperlativesPast PassiveConjunction: Because and SoPunctuating ClausesTypes of Simple SentencesSimple Past Tense and Present Continuous TenseWh- Questions Present Simple TenseLinking VerbsToo or EnoughGrammar & TensesOther quiz:
Grammar › ViewShe slept ____________and had a headache when she got up, so we couldn’t go out.
A. too
B. enough
C. too much
Grammar › View
“Les Miserables” _______ my favorite theatrical play.
A. remain
B. remains
Linking Verb › ViewShe tasted the green tea egg tart.
- action verb
- linking verb
Tenses › View
She ____ a deposit at this time next week.
A. will be making
B. makes
C. is making
D. made
