—The light in the office is still on. —Oh,I forgot ________.
. They were singing and dancing to ________ their high spirits though it was very cold.
. The weather is so ________ this year that we can hardly stand so many cold days!
. The place ________ the bridge is supposed to be built should be________the cross-river traffic is the heaviest.
. I have just come in to see if I can be _________ any assistance to them.
. If this computer does not give complete satisfaction, please return it to the maker stating when and where it was ________.