问题
选择题
The country has acknowledged ______ every means to fight against any possible attack.
A．to have taken
B．have taken
C．to having taken
D．having taken
答案
答案：D
句意：那个国家承认他们已经采取了一切措施去抵抗可能发生的任何攻击。acknowledge“承认”，后跟名词或动词ing形式作宾语。