почему пишут не чей полдома, чьи полдома

3. Переведите предложения на русский язык, обращая внимание на функцию инфинитива в предложении, подчеркните инфинитив, назовите его функцию:

-Another important rule is to be concerned, but not insincere or overly emotional.

-After both Houses of Parliament pass a Bill it must be signed by the Queen.

-He joined the Democrats to be elected to the House of Representatives.

-All witnesses were asked to give written explanations.

-To become a judge a barrister must serve at least 10 years.