Topics: Subject Verb Agreement
A number of special conditions (is / are) necessary for the formation of a geyser.
A. is
B. are
Select your answer:

Random Topics:
Identifying Sentence TypesGerund or to InfinitiveCohesive DevicesComparative AdverbsModals of ProbabilityPast Perfect Simple & Past Perfect ContinuousFOR & SINCEModal Verbs and AdviceVerbs and TensesAdverbOther quiz:
Gerund, Infinitive, Bare Verb › ViewHe made her ………………. the message
A. repeat
B. to repeat
C. repeating
Prepositions › View
It’s very quiet in this street _______ the day.
A. at
B. during
C. beside
D. on
