[ Grammar and Vocabulary ]
The researchers ………………… many experiments to find the most effective materials.
A. considered
B. confirmed
C. concerned
D. conducted
Random Topics:
ConjunctionsPossessive Pronouns and Adjective PronounsObject PronounDefinite and Indefinite ArticleAdverbial Clauses of Reason / CauseSo or SuchThird ConditionalGrammar: is/are/was/wereUsed toAdverb of MannersOther quiz:
Grammar › ViewI used __________________ basketball during my college years.
A. playing
B. to play
Loose vs. Lose › View
Your shoelaces are …
- loose
- lose