With a lot of difficult problems ______, the newly-elected president is having a hard time.

    sales of cars up by 30% last year, the traffic in Beijing has become increasingly terrible.

With food and gunpowder       short, the soldiers are suffering from hunger and danger of being attacked by the enemies at any time.

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

With all the things he needed _______, he went home happily.