The question occurred to me ______ we were to get the machine needed.
---What do you think about the measures taken to prevent _________ global warming?--- On __________ whole, they are good.
---Shall we go out for a meal tonight?---__________. We haven’t been out for ages.
I would appreciate ___________, to be frank, if the goods could be delivered as soon as possible.
---- How did it __________ that you made such a silly mistake?---- I myself haven’t figured it out yet.
The water in the river isn’t fit to drink, for you know, it __________.