He usually watches TV______ Saturday evening.A. on B. in C. at
——How often do I need to feed the dog?——It___food everyday, or it will be hungry.
——How heavily it is raining!——What a pity!We have to_____our sports meeting.
——Why are you walking so quickly, Edward?——There_____a talent show in ten minutes.
——Do you know_____?——He is a dentist.
——Could I borrow your camera?—— ,but please give it back by Saturday.