[ Subject Verb Agreement ]
One group of researchers ___ studying about the source of Covid-19.
A. is
B. are
Select your answer:
Random Topics:
Tenses and StructuresSubordinate ConjunctionsGrammar and Sentence StructureIf ClausesHow many / How much - Is there / Are therePresent Continuous for FutureSocial Media VocabularyThe Structural Types of SentencesGrammar for TOEFLOther quiz:
Grammar › ViewMother ___________dinner while she was waiting for the guests to arrive last night.
A. prepare
B. prepares
C. prepared
D. had prepared
Tenses › View
My friend ……. a birthday party next week.
A. going to have
B. had
C. is going to have
D. has