People used this service on speacial occasions

A This service was used on special occasions

B This service on special occasions is used

C Special occasions this service is used on

D This service were used on special occasions

 Cấu trúc câu bị động ở quá khứ: S+tobe(was/were)+V_PII/ed+....

⇒A

Cho mik hay nhất nha:)))

`A` This service was used on special occasions

`=>` Bị động - quá khứ đơn `->` Loại `B`,`C`

`(+)` S + was/were + PII (by.....)

`(-)`  S+ was/were + not + PII (by.....)

`(?)` Was/Were + S+ PII (by....) ?

`->` She, he, it và N số ít `-` was `=>` Loại `D`

$@H$