[ Grammar and Vocabulary ]
The researchers ………………… many experiments to find the most effective materials.
A. considered
B. confirmed
C. concerned
D. conducted
Select your answer:
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Countable and Uncountable Nouns › ViewMay I have ___________ sugar in my tea?
A. some
B. any
Vocabulary › View
The winners of Vietnam Idol’s different seasons have become famous ______ in Viet Nam.
A. singers
B. actors
C. artists
D. teachers