It’s bad news that quite a few rare animals are _____ each other. [ ]

passenger paid for my ticket, without which I _______ the last train.

Large quantities of meat ____ sold in that store at the present time.

_______do you surf the Internet —Once a month.

Excuse me, could you help me take this chair to myoffice—I’m sorry, ______ I can’t help you right now. I’m toobusy.