--- What is that wonderful smell? --- Our neighbor ________ for a party.
Beer is the most popular drink among male drinkers, _____ overall consumption is significantly higher than that of women.
I hope all the precautions against air pollution, _____ suggested by the local government, will be seriously considered here.
You see the lightning _____ it happens, but you hear the thunder later.
It is useful to be able to predict the extent _____ a price change will affect supply and demand.
I have kept that portrait _____ I can see it every day, as it always reminds me of my university days in London.