He left the key ______ he had been an hour before.
I thought her nice and honest ______ I met her.
--- You should have thanked her before you left. --- I meant ______, but when I was leaving, I couldn’t find her anywhere.
He ______ persuade his father to give up smoking but his father didn’t.
The reason _______ his going to Britain was ______ he got a new job there.
_____ with the size of the whole earth, the biggest ocean does not seem big at all.