It’s _____ cold today. We have to stay at home.
When did you buy this computer? It looks so new.— I it for only a couple of days. My sister bought it for me as a birthday present.
Look! A man is cutting a tree on the moon. –It ______ be true. The teacher said there is no air on the moon.
Jack is a successful writer. He devotes all his energy ______ the novels.
I find _______ necessary to take some warm and dry clothes with us during the walk.