人民检察院对公安机关及其人民警察的监督，主要是在( )活动中通过法定的程序实现的。

A．侦查

B．监督

C．诉讼

D．审判

用所给词的适当形式填空。每词限用一次。

小题1:My little sister always ______ of becoming a singer.

小题2:Li Jianrou won the_______ prize in Sochi Winter Olympics.

小题3:The song Where does the time fly reminds us _______our parents

小题4:My dear children, I hope you can believe in ________.

小题5:Good ways of learning are ________ for our studies.