What shall human beings do if oil_______sometime in the future?
One of the first foreign expeditions _______ Mount Qomolangma arrived in Tibet in 1921.
________ at the city centre, the old temple has a history of more than 500 years.
If the weather had been better, we could have gone outing. But it ____ all day.
As he is in B. He is in C. Being in D. He being in
They sold ______ boxes of such sweets last week.