They found the remains of buildings _______ under the sand, together with a lot of treasures.

With his work ________, he went home happily.

_____ scores of times , but he still couldn’t understand it ．

—Why are you looking pleased ?
—Oh, I’ve just had a job _________．

I wonder if you’d mind ___________ a few questions.
A. we asking     B. us asking   C. our ask    D. us to ask

He couldn’t have Yong Hui __________ telling people lies.

Wang Peng sat in his empty restaurant, ____________.

At that time people would starve if food was difficult _______, especially during the cold winter months.

_____ at in this way, the present economic situation doesn't seem so gloomy.

Professor Johnson is said _____ some significant advance in his research in the past year.