Question

（2006，鹽城）Bob is ________ eleven-year-old boy, but he knows a lot about Chinese history.

1. A.
   an
2. B.
   a
3. C.
   the
4. D.
   /

Answer 1

A
eleven是以元音讀音開(kāi)頭的單詞，需加冠詞an。