A trend_______ that 3D films will become more popular ever since the filmAvatar hit the market.

The store sells sweaters ______ a very good price. We can buy one ______ 40 yuan.

ing to the weather forecast, this airport will not be suitable for landing, and 50 miles away.

I need ________ bananas to makefruit salad. Could you please buy some

Math is useful, so it’s _______ for us to learn it well.