【2015·北京】You won’t find paper cutting difficult _____you keep practicing it.
There's no __________in the way they do their accounts(记账).
There are too many difficulties for us __________. Wereally don't know __________ to do.
You'll find taxis waiting at the bus station __________ you can hire to reach your host family.
Thetest measures mathematical __________.
This piece of news was __________ economic and social problems.