. (2010·江西名校模拟) —I’ve heard they went skiing in the mountains last winter. —It ______ true because there was so little snow there then.
Tony was very unhappy for _______ to the party.
Though ________ money, his parents managed to send him to university.
The research is so designed that once _______ nothing can be done to change it.
“What do you think made Mary so upset?” “_______ her new bike.”
“How do you deal with the disagreement between the company and the customers?” “The key ______ the problem is to meet the demand ______ by the customers.”