27. According to police ______, Mr. and Mrs. Hunt were found dead on the floor of their kitchen.
There is a notice board at the gate of the construction, _______ reads: Keep out without permission.
Completing all the homework by the dinner, John felt very tired. He __________all day long.
Though working outside, he is always ________ about his aging mother at home.
-------The weather is terrible now; our earth is badly damaged! -------Yes. It’s urgent that everyone _________ spare no effort to do something to save our world .
Because the writer fell ill all of a sudden, the novel _____________ by the end of next month was put off.