Entering the room, I found Mary ______at the desk and ______a letter.

 A. Seated；wrote       B. Sitting；written 

C. Seating；writing  D. Seated；writing

_________on the main street, the market was busy yesterday.

 A. Located         B. locating   C. being located   D. to be located

They were surprised that a child should work out the problem _____ they themselves couldn’t.

 A. when                B. where        C. until                D. while

--- You must obey every word of mine.

   --- _____ I don’t?

 A. What if           B. So what   C. How if            D. Only if

_____ the lecturer more clearly, I arrived early and chose a front seat.

A. Hear             B. To hear  C. Heard                D. Hearing

---You have made great progress in your English study, haven’t you?

   --- Yes, but much _____ .

A. remains to do                   

B. is remained to do

C. remains to be done              

D. is remained to be done

---Can you ask him to give up the foolish idea?

---_____ no point in doing so—he’ll never change his mind.

A. It is                B. It has       C. There is         D. There has

--- The football game was not interesting, was it?

   ---_____. Even John, who _____ to the super fans, didn’t enjoy it.

A. Yes, is belonged B. No, is belonged 

C. Yes, belongs D. No, belongs

---Will you please repeat your idea?

   ---Sure. But I don't think that you ________ attention.

A. paid         B. pay       C. are paying          D. were paying

The theory _____ correct immediately the experiment was completed.

A. turned in        B. turned out   C. turned over     D. turned to