______and I’ll get the work finished

With exports ______ a big role in its economic growth, China has been affected by the current financialstorm.[ ]

I heard that you made a bicycle trip to the 2010 World Expo of Shanghai alone. — No. Actually, my friend Bob ______ me. [ ]

下列各句中，划线的词语使用恰当的一句是（ ）

The winter of 1990 was extremely bad______, most people say it was the worst winter of their lives