[ Subject Verb Agreement ]
The flock of birds ___ flying south for the winter.
A. is
B. are
C. were
D. have been

Random Topics:
Object PronounsPresent Simple and ContinuousQuantifiers & Modal VerbsWho am I?HomophonesDefinite ArticlesHomophone & HomonymPassive Voice - Present TensesSimple Present and Past TensesPast Perfect Simple TenseOther quiz:
Grammar › ViewToday is Monday,…………..?
A. Isn’t he
B. Isn’t it
C. Is it
D. Are they
Vocabulary › View
My _____________ are very comfortable.
A. brogues
B. bourgeois
C. avant garde