[ Past Passive ]
In ancient times, fire (use) ____________________ as a signal over long distances.
A. was used
B. were used
C. is used
D. are used

Random Topics:
Vocabulary : Coming & GoingPreposition and AdjectiveVerb Tenses (Progressive, Perfect)Gerund Subject or ObjectCoordinating ConjunctionsModals of ProbabilityConditionals and Modals of ProbabilityRelative Clauses and etcAdverbs of frequencyModal Verbs of Deduction and SpeculationOther quiz:
Vocabulary › ViewWhat’s the noun form of strong?
A. strongest
B. strength
C. strengthen
Vocabulary › View
The man had a ________ headache after the concert.
A. chronic
B. mimic
C. spectator
D. irritable
Grammar › ViewHe doesn’t have ______________ friends.
A. Many
B. Much
Past Tenses › View
The last time she met her parents was 2 months ago.
A. simple present
B. present continuous
C. simple past
D. present perfect
E. past continuous
