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Color-blind people often find it difficult to _____ between blue and green.

A．compare          B．separate          C．distinguish         D．divide

When the woman was told that her husband had a car accident, her mind _____.

A．ended up         B．made sense        C．blocked out        D．went blank

Little ______  that we were watching his every move，so he seemed to be going his own way      in this business.

A．did he know       B．he didn't know      C．didn't he know     D．he knew

The bus ____ at six, but it arrived an hour later.

A．should arrive                          B．had arrived

C．should have arrived                     D．must arrive

When ____ where he was born, Kale said he was a Londoner.

A．a(chǎn)sking            B．a(chǎn)sked             C．being asked        D．was asked

I’ve seen the man        dog bit you.

A．who             B．whose            C．whom            D．that

I thought her honest ___ I met her.

A．first time          B．for the first time    C．the first time       D．by the first time

With a lot of difficult problems_____, the newly-elected Prime Minister will have a hard time.

A．settled           B．settling           C．to settle           D．being settled

It was ______ in the exam that ______ how much time I had wasted. 

A．not until I failed;I realized                 B．until I failed; I didn’t realize

C．not until I failed; did I realize               D．until I failed; I realized