I did my homework with the help of my father _______ ________ _________ (在过去)。
Tim is ________ __________ _________ (和……一样友好) Tom.
________ ________ ________ (……的数量) birth rate is falling.
_______ ________ (谈到)one’s favourite city, I like Sanya best
I never ________ _________ (害怕) dark.