Question

The fantastic mud-rock flow in Zhouqu of Gansu at about 22 o’clock on August 7^th, 2010 was considered______ deaths of more than 1,000 natives .

A．to cause

B．causing

C．to be causing

D．to have caused

Answer 1

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。