`3,` The meeting will be held before MayDay.

- Bị động tương lai đơn : S + will be + PII + (by O)

- hold - held - held (v) tổ chức

`4,` A lot of money is spent on advertising everyday.

- Bị động hiện tại đơn : S + am/is/are + PII + (by O)

- spend - spent - spent (v) dành

`5,` Our written work was returned to us by the teacher.

- Bị động quá khứ đơn : S + was/ were + PII + (by O)

`6,` Her dog is taken for a walk every morning.

- Bị động hiện tại đơn : S + am/is/are + PII + (by O)

- take - took - taken

`3.` The meeting will be held by them before MayDay.

`-` Bị động Tương lai đơn : S + will + be + V-ed/c3 + ... + (by+O)

`-` "by+O" đứng trước trạng từ chỉ thời gian.

`4.` A lot of money is spent on advertising everyday.

`-` Bị động HTD : S + am/is/are + V-ed/c3 + ... + (by+O)

`5.` Our written work was returned to us by the teacher.

`-` Bị động QKD : S + was/were + V-ed/c3 + ... + (by+O)

`6.` Her dog is taken for a walk by her every morning.

`-` Bị động HTD.