★ Passive Sentence
Today, many serious childhood diseases………………………by early immunization.
A. A. are preventing
B. B. can prevent
C. C. prevent
D. D. can be prevented
Preview next quiz:
………………………………………..yet?
A. A. Have the letters been typed
B. B. Have been the letters typed
C. C. Have the letters typed
D. D. Had the letters typed
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