Some of the exercises appear to be ___ ones that you have done, but after taking ___ second look, you will find that they are different.
I would appreciate it ________ you call back this afternoon for the doctor's appointment.
John shut everybody out of the kitchen ________ he could prepare his grand surprise for the party.
________ the police thought he was the most likely one,since they had no exact proof about it,they could not arrest him.
The medicine works more effectively ________ you drink some hot water after taking it.
Owen wouldn't eat anything ________ he cooked it himself.