Put the following sentences into the passive voice.

1. She wants to know what sort of research you are doing.

2. The singer knew that they were praising her.

`1` She wants to know what sort of research is being done .

`-` Bị động hiện tại tiếp diễn : S(bị động) + is/am/are + being + V3/V_ed + O ...

`2` The singer knew that she was being praised .

`-` Bị động quá khứ tiếp diễn : S(bị động) + was/were + being + V3/V_ed + O ...

`1` `S`he wants to know what sort of research is being done.

`-` Bị động HTTD: S + is/am/are + being + PII (by O)

`-` "what sort of research" là S số ít `->` is

`->` Cô ấy muốn biết loại nghiên cứu nào đang được thực hiện.

`2` `T`he singer knew that she was being praised.

`-` Bị động QKTD: S + was/were + being + PII (by O)

`-` she là S số ít `->` was

`->` Nữ ca sĩ biết mình đang được khen.