Computers ________ since 1940s. A. is in used B. was ...

[ Active and Passive Voice ]

Computers ________ since 1940s.

A. is in used

B. was used to

C. used

D. have been in use

Select your answer:
A B C D E

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Grammar - Capitalization and Possessive Nouns Verb to be Conditionals and Wishes Adverb Of Place Verb Forms and Prepositions Relative Pronoun/Adverbs Synonyms Simple Tense Articles and Demonstratives Coherent Sentence with Correct Grammar Structure

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The suitable suffix for the word instruct is :

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B. ist

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A. Past perfect, present perfect, future perfect

B. Past perfect continuous, present perfect continuous, future perfect continuous

C. Past continuous, present continuous, future continuous

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A. did … know

B. have … known

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