The necklace the woman bought is          , because it is made of glass.

Mr Brown is a(n) _____ secretary in our office, for he is able to do tasks successfully, without wasting time and energy.

Calculations，which are astronomically exact，have been made ________ with the use of computers.

Thanks to the good care of the nurses ,the boy is ______ recovering from his lung operation .

 John seems     to sit in front of the television all night.