Unfortunately he fell over some bricks ________ lying on the ground.

1. A.
   left
2. B.
   having left
3. C.
   leaving
4. D.
   to leave

Unfortunately, when I dropped in, Professor Smith ________, so we only had time for a few words.

A. has just left B. had just left  C. just left     D. was just leaving

Unfortunately, when I dropped in, Doctor Li _____ for Beijing to join in the fight again SARS, so we only had time for a few words.

  A. just left                     B. has just left     

C. is just leaving                 D. was just leaving

Unfortunately the restaurant he recommended fell far short of our _______.

  A. expectations   B. advantages    C.opportunities     D. contributions

— Unfortunately, I left my keys at home.

— ________. I have an extra set.

A. Bad luck          B. Not to worry    C. Don’t mention it              D. That’s right