I’m afraid I’m not ____ to help with the show, for I am fully occupied with my own project．

I like junk food very much, but I eat ______ only once a month.

Human facial expressions differ from those of animals in the degreethey can be controlled on purpose[ ]

Would you like to watch the three-D film Titanic with me–Certainly. I don’t mind seeing it again although I _____ it twice.

1You_________lose your way if you walk alone in the mountains at night.