After he became conscious, he remembered ______ and_____ on the head with a rod.
--How about going for a walk? -- _____, but maybe it would be better to play cards.
Do you know the year _____Einstein died?
That is the reason _____I refused it.
This is the factory _____my father worked ten years ago.
The conference has been held to discuss the effects of tourism ______the wildlife in the area.A. in B on C. at D. with