[ General Knowledge ]
What gas do we need to breathe to stay alive?
A. Nitrogen
B. Carbon Dioxide
C. Oxygen
D. Argon
E. Sulphur dioxide

Random Topics:
ConnectorsGerund NounModals of PredictionRelative PronounsModals of Necessity and SuggestionVerbs & Verb TensesWho am I?Conjunctive AdverbsPresent Simple TenseGrammar and PunctuationOther quiz:
Grammar › ViewThe verb or verb phrase that expresses the essential thought about the subject of a sentence
A. subject
B. predicate
C. interjection
D. conjunction
Grammar › View
He left for Paris _______ Sunday _____2:00 p.m.
A. in / on
B. on / in
C. at / at
D. on / at
Grammar › ViewThis homework is ______ than the previous one.
A. a harder
B. a little
C. a little harder
D. a harder little
Grammar › View
He is very tired______ he did not sleep last night.
A. since
B. although
C. because
