Question

The teacher asked his students to write ________ composition.

1. A.
   a 800-word
2. B.
   an 800-words
3. C.
   a 800-words
4. D.
   an 800-word

Answer 1

D
该题可用逐项排除法。800以元音音素开头，要用an修饰。“800字的作文”要用基数词加连字符加单数名词作定语修饰“作文”。如：a four-year-old girl.