[ Science ]
How long is a day?
A. 24 hours
B. 23 hours and 56 minutes
C. 23 hours and 57 minutes

Random Topics:
Present, Past and Future TenseNounsLanguage Features: Reflective ArticleConditional SentenceModals TensesConjunctive Adverbs and PunctuationPresent Perfect TenseSimple Present - Negative & InterrogativePunctuationGrammar - Place and MovementOther quiz:
Idioms › ViewThe weather is really cold and harsh at this time of year.
a. red
b. raw
c. ripe
Grammar › View
What is the action verb in this sentence?
She is tired, but she will finish her project tonight.
A. tired
B. is
C. will finish
D. tonight
Grammar › ViewThe book came out yesterday, but I _________________ it.
A. The book came out yesterday, but I have already read it.
B. The book came out yesterday, but I has already read it.
C. The book came out yesterday, but I have already readed it.
Conjunctions › View
Is she happy…….sad?
A. and
B. or
C. but