[ Passive Voice ]
Thousands of customers ______ about their phone service by filling out questionaires online.
A. were surveyed
B. were surveying
C. had surveyed
D. had been surveying

Random Topics:
Present Continuous, Present Perfect and Used toSentence Structure and PunctuationFirst ConditionalsPossessive NounsPast form of ModalsAuxiliary ModalAdverbs and Time ExpressionsSimilesComparatives, Superlatives, and ModalsAdverbs by TypeOther quiz:
Grammar › ViewWhat type of clause provides essential information about the noun or pronoun it modifies?
A. Independent clause
B. Restrictive clause
C. Non-restrictive clause
D. Dependent clause
Time Phrases › View
Which word means: “at the same time”?
A. as well as
B. same
C. meanwhile
Question Tags › ViewThey are coming late to the party,
A. Aren’t they?
B. Isn’t they?
C. Aren’t he?
D. Isn’t he?
Grammar › View
Sir Arthur Conan Doyle, who passed away many years ago, _________ Sherlock Holmes.
A. was creating
B. used to create
C. created
D. would create
