Having tried hard several times, they finally _______ the hope of finding an effective way to save the dying man.

The boss has given everyone a special holiday, so we _____ go to work tomorrow.

_________is very interesting to swim in the river in summer,but it’s dangerous.

Paper produced every year is ________ theworld’s production of vehicles.

The sight of the ruined temple ______ himof the time when he was trapped but_____ to escape from it through a narrowopening in the quake.