Americans are nervous the prospect of a nuclear-armed Iran, but also worry
the ability of the United States and the United Nations to deal with the situation.
A. about; about
B. to; about
C. for; about
D. for; for
网友回答
(答案→)A. about; about
B. to; about
C. for; about
D. for; for
解析：可联系答.案.网客服索取。