But if a treatment ________ delayed the disease by seven years were to be available, the number of sufferers would drop by 40% by the middle of the century.
He couldn’t ______ the fact that the money was found in his house.
I know he _________ here ten years ago .
Someone is ringing the doorbell . Go and see ____________.
In order to finish the project , we need ___________ money .
She ______have stopped her work halfway.