Those who _________ singing may join us.
The boys and girls were happily making a snowman, _______ with cold.
—Shall I go over to chat with you this evening? —Nice of you! It is ____ great comfort to keep me ____ company, when I’m alone at home.
—Hi, Tom! Could you spare me a minute? I want to have a word with you.—Sure, Jean ____.
--Peter, hurry up! You ______ on the phone.--Oh, I ______. Thank you.
It is a good plan in theory, but it _____ to be seen whether it works in practice.