Hey! quelqu'un pourrait m'aider pour cette exo svp

Mets les phrases suivantes à la voix passive. Attention aux aspects et aux temps.
a. They asked Britain to give Hong Kong back.
b. People thought many Hong Kong inhabitants were reluctant.
c. They say Hong Kong's culture is a mix of two cultures.
d. They say the Opium Wars were a turning point in history.
e. Many people told me to learn about Hong Kong's history before visiting the country.​