Question

When I entered the classroom, I saw Mary ______ at the desk and ______ a letter

1. A.
   seating; writing
2. B.
   seated; wrote
3. C.
   sitting; wrote
4. D.
   seated; writing

Answer 1

D
考查非谓语动词。第一空Mary与seat为动宾关系要用过去分词作补语，与sit为主谓关系要用现在分词作补语；第二空Mary与write为主谓关系要用现在分词作补语。故选D。句意：我走进教室看到玛丽坐在桌子旁边写信。