[ Homonyms ]
The ___ is found naturally in the shell of an oyster.
a. pearl
b. purl

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Complex PrepositionsSimple and Progressive Verb TensesGrammar (Adjectives)Relative Clauses and Past PerfectModal Auxiliaries and To Be VerbsVerbs with Prepositions and ConjunctionsPlaces in TownPossessive Nouns with Apostrophes and PronounsIntensifiers: Really vs VeryPassive Voice, Question Tag, PrepositionsOther quiz:
Present Perfect Tense › ViewHe _________________ the piano for 5 years. (play)
A. has played
B. has playing
C. have played
D. hasn’t played
Grammar › View
I’ve been a student _____ one year.
A. since
B. for