yucheng wrote:My assignment is to choose the best passive sentence for the active above
'best' is a bad description for 'best' has different meanings depending on the situation.
Sentence B would be the normal neutral. Sentence A would be used when someone wanted to emphatically state who did it and the referent for 'them' was known by the people in the conversation. As a normal neutral, it is not 'best'.
Active: They have changed the date of the meeting
Passive: _________
A. The date of the meeting has been changed by them.
B. The date of the meeting has been changed.
C. The meeting has been changed the date.
D. The date of the meeting has changed.
And the answer is B
A big NO to sentence C.
Sentence D is fine and it's very natural but it isn't a passive form.