`1.` The sumptuous feast at the party was enjoyed by the guests.

`-` BĐ thì QKĐ: S `+` was/were (not) `+` PII `+` (by O)

`2.` Visitors are not allowed to feed the animals in the zoo (by the zoo).

`-` Cấu trúc: S `+` be (not) `+` allowed `+` to do sth `+` (by O)

`->` ... (không) được cho phép làm gì (bởi ai) 

`3.` The minutes of the meeting are being taken down by the clerk.

`-` BĐ thì HTTD: S `+` am/is/are (not) `+` being `+` PII `+` (by O)

`4.` The witness is being cross-examined by the defence lawyer.

`-` BĐ thì HTTD: S `+` am/is/are (not) `+` being `+` PII `+` (by O)

`5.` These pills can be taken before or after meals.

`-` BĐ với ĐTKT: S `+` ĐTKT (not) `+` be `+` PII `+` (by O)

`6.` The trophies were presented to the winners by the headmaster.

`-` BĐ thì QKĐ: S `+` was/were (not) `+` PII `+` (by O)

Bị động:

- QKĐ: S+ was/were + V3/ed 

- HTD: S + am/is/are + V3/ed 

- HTTD: S + am/is/are +being + V3/ed 

- S + can be  +V3/ed 

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1. The sumptuous feast at the party was enjoyed by the guests.

2. Visitors aren't allowed to feed the animals in the zoo by the zoo.

3. The minutes of the meeting are being taken down by the clerk.

4. The witness is being cross-examined by the defense lawyer. 

5. These pills can be taken before or after meals.

6. The trophies were presented to the winners by the headmaster.

`color{orange}{~MiaMB~}`