★ Passive Modals, Impersonal Passive
___ speak English.
A. 1.35 billion people are estimated to
B. Are estimated 1.35 billion people
C. It is estimate that 1.35 billion people
Preview next quiz:
Decide whether the sentence should be in active or passive voice.
Polly ___ these books by next Friday.
A. has to return
B. has to be returned
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