____ friend of my grandfather’s will come tomorrow. I’m wondering how old ____ man he might be.
Some of the wolves there _________ their fur.
I’m used to ________ in the house which _______ to keep books and magazines.
Stop! You can never touch this machine when it ________, it is very dangerous.
. I think that this film is _______ a film, it is also a good material for education.
I don’t want to read all these old newspapers, please tell me where the __ ones are.