Topics: Passive and Active Voice
They built this temple 3,000 years ago. This must ________ a great civilization.
a. have been
b. was
c. not have been
d. has been
Select your answer:
Random Topics:
TOEFL GrammarPrepositions and TensesAction, Helping & Linking VerbsPerfect and Past TenseSimple Present and Present ContinuousLinking Words & PhrasesAdverbs of frequencySimple Past/Past ProgressiveSimple PastPrepositions and Phrasal VerbsOther quiz:
Subject Verb Agreement › ViewPhilip (tries, try) to sing high notes.
A. tries
B. try
Prepositions › View
She is afraid ___ walking home alone in the dark.
A. for
B. to
C. of
D. at