精选优质文档-倾情为你奉上冠词练习题1. The I-Pad will soon become _ useful tool in the future communication and entertainment. A. a B. an C. the D. / 2. The boy asked his mother whether France is _ European country. A. a B. an C. the D. / 3. Guide dogs help _blind walk free in the street. A. a B. an C. the D. / 4. This is _ useful dictionary. I always look up new words in it. A. a B. an C. the