______ the police thought he was the most likely one, since they had no exact proof about it, they could not arrest him.
—Did the naughty boy break the glass by chance? —No, ______.
They______ with each other for two years before they got married.
It has something to do with the part electricity ______ in our life.
After graduation he took all his works to London ______ get a good job there.
As soon as the crew(船员) were attacked, the police______ to look into the matter.