you your dictionary?—No. So I have to buy a new one today.
Is ________ name Bob? Yes, I’m Bob.
Some people are worrying about the possibility ________ mobile phones could be responsible for a range of illnesses, from rashes(皮疹) to brain tumors.
Do you know the people _______ came to the party yesterday?— No, I know none of them.
There are about ______ people in this town.