John seems a nice person. ____, I don't trust him.

 A. Even though     B. Even so       C. Therefore    D. Though

---Since you can't find a better job, why don't you stick to the present one?

  ---Well, ___.

A.I believe not B.I don't care  C. Never mind D. I might as well

Scientists think that the continents ____ always where they ___today.

A. aren't; are   B. aren't; were       C. weren't; are            D. weren't; were

Playing tricks on others is___we should never do

A. anything  B. something C. everything  D. nothing

--- Have you finished the report?

   --- No. I ______ it all this week.

   A. will do                  B. had done 

   C. have done                D. have been doing

---I didn't go to work yesterday because my car broke down.

  ---You ____ mine. I wasn't using it then.

A. might borrow          B. could have borrowed

C. must have borrowed    D. ought to borrow

The professor has received the letter ____ to give a lecture in ftinceton Institute.

A. being invited B. to be invited C. inviting himD. invited

_____ wants to study well must learn things _____.

A. No matter who; with heart   B.Who; with his heart

C. Whoever; by heart           D. Whoever; by his heart

There were many students and teachers at the party yesterday. I looked for two seats to sit down with my friend, Tim, but there were ____.

A. neither   B. nothing    C. none      D. no

In salad bars the waiter does not bring you salad. You have to____ yourself, usually to as much as you want.

A. bring   B. serve  C. help D. supply