[ Vocabulary and Grammar ]
Scientists could_______ a way to clean up the oceans.
A. do
B. discover
C. make
Select your answer:

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Indefinite and Intensive NounPassive Voice and Relative ClausesHow much or How many?Future Perfect ContinuousModals of PredictionGrammar PhrasesPresent & Past TensesVerbs and AdverbsActive and Passive Gerunds and InfinitivesWish clauseOther quiz:
Grammar and Vocabulary › ViewI think there are ________ very nice hotels near the ocean.
A. not
B. some
C. any
Countable Noun › View
For lunch, I had a salad and a ___________ of pizza today
A. Some
B. Slice
C. Piece
