I ________ pay Tracy a visit, but I am not sure whether I will have time this Sunday.

[　　]

Such a businessman ________ honest, he gets his money by dishonest ways.

[　　]

John studies so hard that he ________ the examination.

[　　]

________ open the window for you?

[　　]

I've never seen anyone run so fast--________ David go.

[　　]

--How are you today?

--Oh, I ________ as ill as I do now for a very long time.

[　　]

The money he spent ________ food is much more than that ________ clothes.

[　　]

It's dangerous if you have the fire ________ all the night.

[　　]

--What was your impression of last night's lecture?

--________ speaking, I thought it was rather boring.

[　　]

Some students were thought ________ of for what they had done.

[　　]