Excuse me.I ________ I was blocking your way.A．didn"t realizeB．don"t realizeC．ha

题型：不详难度：来源：

Excuse me.I ________ I was blocking your way.

A．didn"t realize	B．don"t realize
C．haven"t realized	D．wasn"t realizing

答案

解析

句意：对不起。我(刚才)没有意识到挡了你的路。根据第二句后半部分的内容可知此处叙述的是过去的情况，表示的是说话之前没有意识到挡住了对方的路，所以用一般过去时。

举一反三

—When did the computer crash?
—This morning，while I ________ the reading materials downloaded from some websites.(2012·福建)

A．have sorted	B．was sorting
C．am sorting	D．had sorted

题型：不详难度：| 查看答案

—Hi, Susan, where were you at lunch time？I ________ a seat for you in the coffee shop.
—Oh, sorry to miss you.My political science class ran longer than usual.

A．am saving	B．was saving
C．had saved	D．have saved

题型：不详难度：| 查看答案

In order to find the missing child，villagers ________ all they can over the past five hours.(2012·安徽)

A．did	B．do
C．had done	D．have been doing

题型：不详难度：| 查看答案

His sister left home in 1998，and ________ since.

A．had not been heard of	B．has not been heard of
C．had not heard of	D．has not heard of

题型：不详难度：| 查看答案

—Why does the lake smell terrible?
—Because large quantities of water ________.

A．have polluted	B．is being polluted
C．has been polluted	D．have been polluted

题型：不详难度：| 查看答案