Question

The student, who ________ about what to do next, turned to his teacher for help．

1. A.
   was puzzling
2. B.
   was puzzled
3. C.
   is puzzling
4. D.
   puzzled

Answer 1

B
puzzled通常形容人，意為“使困惑的”，可以和be動詞構(gòu)成系表結(jié)構(gòu)；puzzling通常形容物，意為“令人困惑的”。