[ Grammar ]
When did people first use plastic bottles for soft drinks? This question in Passive Voice is:
A. When was plastic bottles first used for soft drinks?
B. When were plastic bottles first used for soft drinks?
C. When did plastic bottles were first used for soft drinks?
D. When had plastic bottles been first used for soft drinks?

Random Topics:
Auxiliary VerbsConditional Sentence Type 2Verb PhraseFuture SimpleTenses, Determiners & Subject Verb AgreementShould, Should not haveIn/On/At + TimeAlthough / DespiteModals TensesSubjective and Objective PronounOther quiz:
Grammar and Vocabulary › ViewThe salesman _____ how the blender worked.
A. demonstrated
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Maria loves to ___.
A. swim
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Birds usually have _________ feathers.
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