Tom, clean up the broken glass _________ someone walks on it.
It's ten years since the scientist _______on his life's work of discovering the valuable chemical.
-- You haven't lost the ticket, have you?-- _________. I know it's not easy to get another one at the moment.
Tom owns _______larger collection of _______ books than any other student in our class.
More patients ___________ in hospital this year than last year.
The man insisted________ a taxi for me even though I told him I lived nearby.