The scientist _____ solutions to clean polluted rivers when she discovered a breakthrough.
A. researched
B. was researching
C. had researched
D. is researching
Select your answer:
Random Topics:
Modal Verbs, Passive Voice & ConditionalsCoordinating Conjunctions and Comparative AdjectivesInterjections, Tag Questions and Nouns of Direct AddressModal Verbs and ConditionalsRelative Clauses PronounsWould rather/ would prefer/ would likeSentencesVerb to havePresent and Future TensesFirst and Second ConditionalOther quiz:
Passive Voice › View“Somebody is using the computer right now.”
The passive of the above sentence is ….
A. The computer is being used by somebody right now.
B. The computer is used by somebody right now.
C. The computer being used by somebody right now.
D. The computer used by somebody right now.
Coherent Sentence with Correct Grammar Structure › View
Which of the following sentences demonstrates correct pronoun-antecedent agreement?
A. Each of the players must bring their own water bottle.
B. Every student must submit their assignment on time.
C. Every student must submit his or her assignment on time.
D. Each of the players must bring his water bottle.