so the no car day campaign asks beijing drivers （ ） their cars at home one day each month.A leave B leaving C to leave D leaves 为什么是C不是A

so the no car day campaign asks beijing drivers （ ） their cars at home one day each month.A leave B leaving C to leave D leaves 为什么是C不是A
so the no car day campaign asks beijing drivers （ ） their cars at home one day each month.
A leave B leaving C to leave D leaves 为什么是C不是A

so the no car day campaign asks beijing drivers （ ） their cars at home one day each month.A leave B leaving C to leave D leaves 为什么是C不是A
Ask sb to do sth 固定搭配啊.
但是有些是可以省略不定式to的,如 help(make) sb (to) do sth

ask sb to do sth

ask sb to do