Has anything caught your eye in today’snewspaper—Yes. A new eight-kilometer-long road isunder ________ that links the port area with the motorway system.

They kept trying _____ they must have knownit was hopeless

I hope that the little ________ I have been able to do does good to them all.

Computers of today can work than the ones in the 1970s.

下列各句中，加点的成语使用恰当的一句是（ ）