[ Grammar ]
—- angles of any triangle always add up to 180 degrees.
A. If three
B. The three
C. Three of
D. Three are

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Relative Pronouns with PrepositionsFigurative Language VocabularyGerunds and TensesUnless If First ConditionalPossessive Adjectives and Possessive PronounsConjunctions and CommasPresent Simple Affirmative and NegativeEssential and Nonessential ClausesAdjectives with -ED and -INGGrammar ClausesOther quiz:
Tenses › ViewI shall be writing a letter at 5 o’clock tomorrow.
A. Future Simple
B. Future Continuous
C. Past Simple
D. Past Perfect
Adjectives-Comparison, Superlative › View
What are you doing with these ____________ bottles?
A. empty glass
B. glass empty