问题
选择题
(2013·辽宁，28)Laura was away in Paris for over a week.When she got home，there was a pile of mail________for her.
A．waited
B．to wait
C．waiting
D．was waiting
答案
答案：C
考查非谓语动词。此题there be句型的主语mail后接后置定语，wait与mail间为主动关系，且wait这个动作正在进行，故选C，现在分词。