Question

Not until I ________ to work ____ how much time I had wasted.

A．did begin; didn’t I realize	B．began; I realized
C．did begin; I realized	D．began; did I realize

Answer 1

D

本題考查倒裝句。否定詞Not until位于句首，主語要用部分倒裝，但從句不倒裝。句意：直到我開始工作我才意識到我浪費了多少工作。根據語境應用過去式，所以選D