He is a man of great experience, _____ much can be learned.

The task was difficult, but their _____ expression let us know that they would not give up easily. [ ]

tly I have bought an iPad 3 on the website of taobao. com, ________ the price is very reasonable.

am, ______ to climb the world’s second tallest mountain twice, finally decided to give up.

We met an old friend in New York ____our expectationShe waved at us _____ the street when she saw us