China's icebreaker Xuelong ______ by heavy floes since Friday after rescuing passengers on a Russian vessel stranded in Antarctica.
Fifty-six ______ twenty-seven makes eighty-three.
Every means ______ tried, yet no result ______encouraging up to now.
Peter was ______ to come to school this morning.
Tom with his friends ______ volleyball since three o'clock.
All that can be said ______.