[ Subject Verb Agreement & Subjunctive Mood ]
A number of engineers … trying to fix the problem.
A. am
B. be
C. is
D. are

Random Topics:
There is, There are, Some, AnyIELTS GrammarReported - GerundCorrelative ConjunctionInfinitive and GerundsAsking and Giving SuggestionGrammar - First ConditionalIrregular verbsOpinion / AgreementInterrogative PronounsOther quiz:
Simple Tenses › ViewWhich sentence is in Simple Present Tense?
A. I eat breakfast at 7 AM.
B. She was eating when I arrived.
C. They will go to the beach tomorrow.
D. He had already left when I came.
E. adverb
Grammar › View
She wonders whether she ____ visit the Arctic some day.
A. may
B. might
C. can
D. could
Pronoun vs. Pronouns › ViewRalph didn’t like his haircut.
A. His
B. Like
C. Haircut
Tenses › View
If you eat all of that cake, you ______________ (feel) sick.
A. will feel
B. would feel
C. feel
D. feels
