______ with great pressure in the job market, university graduates start to make use of blogs to attract publicity.

 With a lot of difficult problems _______, the manager felt worried all the time.

The frighten boy lay in bed quietly, with his eyes____ on the wall, saying nothing.

Look over there--- there’s a very long，winding path _____up to the house．

Bats are surprisingly long-lived creatures, some ____________ a life span of around 20 years.