问题
选择题
“I’m certainly more and more to the conclusion that Iraq has, ____ they maintained（断言）, destroyed almost all of _____ they had in the summer of 1991.” Blix said.
A．which, what
B．as, which
C．as, that
D．as, what
答案
答案：D
关系代词as引导非限制性定语从句作maintain的宾语;在宾语从句中缺少宾语，应用what引导。故选D。