[ Subject-Verb Agreement ]
Not only the students, but also the teacher (has, have) been unhappy.
A. Has
B. Have

Random Topics:
Simple Past - Irregular VerbsCommon Grammar Mistakes and Spelling TipsCorrelative conjunctionsGrammar and PrepositionGrammar - ConnectorsPresent Forms and Narrative TensesVerb Tenses and UsageModals - Have to or ShouldPreposition (at,in,on)Wish SentencesOther quiz:
Perfect Tenses › ViewLook at this wall. Someone _______________ (paint) a beautiful picture on it.
A. had painted
B. was painted
C. has painted
D. had been painted
Tenses › View
They _____ to Africa next Friday.
A. are going
B. are going to go
C. have gone
D. will go
Grammar › ViewI have art class on Monday and Tuesday. I have to do art work __________ a week.
A. once
B. twice
C. every day
D. three times
Grammar › View
Professor Brown’s presentation was very easy to follow. As a result, only ……………students had questions at the end.
A. a few
B. a little
