[ Phrasal Verbs ]
Scientists have recently …………….. research on blood lead levels of athletes.
A. carried out
B. found out
C. narrowed down
D. resort to

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Present Simple Affirmative and NegativeGrammar PhrasesPresent ContinousPresent Tense (Negatives and Questions)Present Perfect Simple vs ContinuousInfinitives and GerundsNouns as AdjectivesGrammar: Defining Relative ClausesPreposition and Word FormDependent PrepositionOther quiz:
Present, Past, Present Perfect and Comparative › ViewI wear glasses now.
A. Present
B. Past simple
C. Present perfect
D. comparative
Grammar and Vocabulary › View
The_______ of warm clothes from the donors last winter was really meaningful to those poor children.
A. volunteering
B. donation
C. advantage
D. charity
Grammar › ViewWhat is the past tense form of the verb “fight”?
A. fighted
B. fought
C. fight
D. fighting
Modals › View
____ we go to the beach this weekend if the weather is nice?
A. Shall
B. Might
C. May
D. Would
