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A. education information science technology
All students had traveled in commercial planes before. All students were nervous. Most students felt nervous traveling in commercial planes. Most students felt nervous when they were taken up in a fighter plan
had been had to be must have been could have been
most of which most of what most of them most of whom
All students had traveled in commercial planes before. All students were nervous. Most students felt nervous traveling in commercial planes. Most students felt nervous when they were taken up in a fighter plane.
has been provided has provided had been provided had provided
most of which most of what most of them most of whom
have read had read have been reading had been reading
The lights had gone out The lights having gone out The lights went out The lights have gone out
the students would be permitted had the students been permitted would the students be permitted the students had been permitted
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