1．—Have you paid the rent of the house?
—The rent of the house? ________
A．That isn't due yet.
B．Are you sure?
C．The house needs repair.
D．Please remember the amount.
答案与解析：A 考查交际用语。句意：——你付过房租了吗？——房租？还没到期呢。be due满期，到期。
2．He saved my life at the ________ of losing his own life.
A．danger B．harm
C．risk D．pain
答案与解析：C 句意：他冒着失去生命的危险救了我的命。at the risk of“冒着……危险”，后接v.ing。
