The children talked so loudly at dinner table that I had to struggle _______.
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Rainforests ____ and burned at such a speed that they will disappear from the earth in the near future.
Mr. Wu was in hospital . when we went to see him , he ____on .
They claim that they can ______ the old building so that it may look like newly built.
Let's not wait any longer, he might not ____ at all.