.I had been puzzled over the problem for over an hour without any result, _____ all at once thesolution flashed across my mind.
Whether you go or not, _______ is quite all right with me.
If you want a double room, _____ will cost another £15.
If you promise to go with us, _____ will be OK.
If the man is only interested in your looks, _____ just shows how shallow he is.
On Sundays there were a lot of children playing in the park, _______ parents were sitting together joking.