[ Grammar ]
What is the subject of this sentence:
Hummingbirds beat their wings 60 times a second.
A. Hummingbirds
B. Hummingbirds beat
C. beat their wings
Select your answer:

Random Topics:
Along & AgainstModals and TensesIdiom and TensesModal Verbs for SpeculationModals and Active and Passive VoicePreposition of TimeVocabulary and Sentence StructurePast ContinuousWord FormationState Verbs and Action VerbsOther quiz:
Prepositions › ViewElders usually wake up ___ 5 o’clock in the morning.
A. in
B. on
C. at
Perfect Tenses and Have Got › View
Identify the sentence that uses the future perfect tense.
A. By the end of the day, I will have finished my work.
B. By the end of the day, I finish my work.
C. By the end of the day, I have finished my work.
D. By the end of the day, I will finish my work.
