In order to find the missing child,villagers ________ all they can over the past five hours.(2012·安徽)
China has promised to revise its existing regulations and ___ new policies according to WTO requirements.
In the dream Peter saw himself ___ by a fierce wolf, and he woke suddenly with a start.
___ the employees' working efficiency, the supervisor will allow them to have a coffee break.
You can find whatever you need at the shopping centre, ___ is always busy at the weekend.
There are hundreds of visitors ___ in front of the Art Gallery to have a look at Van Gogh’s paintings.