[ Grammar ]
I’ve read the _____ of this book three times but I still can’t understand what it’s about.
A. introduction
B. introducing
C. introduced

Random Topics:
Grammar - QuantiflierTime Clauses of FutureCommon Grammar Mistakes and Spelling TipsPresent simple, Present continuous, Singular, PluralSubject Verb Agreement; Indefinite PronounsFuture PlansClauses and ConjunctionConjunctions and TransitionsVerbs + Infinitives / GerundsPresent Simple & Present ContinuousOther quiz:
Adverbs and Adverbial Phrases › ViewWhich sentence is correct?
A. David walks to work every morning.
B. David every morning walks to work.
C. David walks every morning to work.
Present Tense › View
Identify the correct form of the verb in the sentence: ‘They ________ (swim) in the pool every weekend.’
A. swims
B. swimming
C. swam
D. swim
Vocabulary & Grammar › View. What is most directly related to “health”?
A. A struggle to win a prize
B. A person’s physical and mental well-being
C. A major rebellion
D. A creative invention
Coordinate Conjunction › View
The universe is a big place, ________ there may be intelligent life out there.
A. for
B. or
C. nor
D. so
