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:
Grammar › ViewWhat time does the supermarket open?
A. Could you know the time the supermarket open?
B. Do you know what time the supermarket opens?
C. Could you tell me the time the supermarket open?
D. Can you know the time the supermarket open?
All, Both, Neither, None, Either › View
There are twenty students in my class, but______of them like hip hop. Isn’t that strange?
A. all
B. either
C. none
D. neither
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
