There are five chairs ___ ,but I am at a loss which to buy .

____the news ,she sat down on the chair and started to cry .

I’m glad to see the rapid progress ______in science and technology in the past decade.

He seems ____ something valuable. He looks so worried.

．Was it ______ Expo 2010 that made Shanghai the focus of the world then?

To our surprise, the fashionable young lady ________ to be a thief．

— What’s the matter with you?
—______the heavy suitcase, my waist was hurt unexpectedly.

The situation seems to be better, and I suppose it is because of the war ______ to an end.

The young man _______in studying paid no attention to the outside world.

The company has turned ____ e-commerce.