[ 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:
Adverbs or Adjectives › ViewShe sang _________________.
A. happy
B. happily
Grammar › View
No firm can ___ to rely forever only on the strength of its name to sell products.
A. require
B. afford
C. suppose
D. depend
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
