Some fans, _____ money was a big problem, could not afford to go to the concert to see their star play.

__ the difficult maths problem, I have consulted Professor Russell several times.

More and more people are willingto______part of their incomes to the school children in the poverty areas.

He’s got himself into a dangerous situation ____ he is likely to lose control over the plane.

The driver began to speed up to ______ for the hourhe’d lost in the traffic jams.