一I am out of breath. I can’t go any further.一_______! I am sure you can make it.
School students ________ smoke because it is against the school rules.
_____ great fun it is to make a snowman in winter.
The flight to London wasbecause of the heavy snow.
Tom is weak in physics. He always feels _______ before he takes a physics test.
Ann is a careful girl. She always goes over her exercises to____ there are no mistakes.