[ 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

Random Topics:
Conditional SentencesPrepositions and Prepositional PhrasesGrammar and Passive VoiceSimple Present ProgressiveQuantifiers with NounsTOEICPast Continuous Tense & Past ModalsPhrasesSubordinating ConjunctionPunctuationOther quiz:
Conditional Sentences › ViewHe __________ (miss) the flight if he __________ (not arrived) at the airport on time.
A. misses / hadn’t arrived
B. would miss / didn’t arrive
C. could miss / hadn’t arrive
D. might miss / didn’t arrive
Grammar › View
Daniel is riding his ________. It is a gift from his grandpa for his eleventh birthday.
A. a new bicycle
B. bicycle is new
C. new bicycle
D. that new bicycle
Compound Sentences › ViewDo you want to try these shorts, _____ do you want to try on those blue ones?
A. and
B. but
C. or
Grammar › View
I enjoy reading this new magazine. ___, it has good articles.
A. Moreover
B. Nevertheless
C. However
