[ 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 › View_________ the weather was bad, we decided to stay home.
A. Because of
B. Due to the fact that
C. Due to
D. If
Degrees of Comparison › View
Our neighbourhood is __________ (peaceful) Los Angeles.
A. The most peaceful
B. More peaceful than
C. Peacefuler than
D. More peacefuler
This 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