问题
选择题
The fantastic mud-rock flow in Zhouqu of Gansu at about 22 o’clock on August 7th, 2010 was considered______ deaths of more than 1,000 natives .
A．to cause
B．causing
C．to be causing
D．to have caused
答案
答案：D
考查非谓语动词。be considered to have done认为过去做过某事，根据句意选D。