[ Grammar ]
Ducks ______ birds, but cows _____ birds.
A. aren’t / aren’t
B. aren’t / are
C. are / aren’t
D. are / are
E. is / isn’t
Select your answer:

Random Topics:
Tenses and Sentence CompletionPerfect Verb TensesInversion + Passive VoiceHabitual and Continuous TensesDaily Routines & TensesPast TenseGrammar CorrectionSubordinating Conjunctions and Complex SentencesVerb + Infinitive or Gerund-Ing and Infinitive Verb PatternsOther quiz:
Conjunctions › ViewYou won’t pass the exam ______ you study.
A. before
B. because
C. unless
D. as
Grammar › View
Which word is spelled incorrectly?
It is ilegal to use certain types of fireworks in many states.
A. certain
B. ilegal
C. states
D. correct
