1. The boss wanted an assistant with ______ knowledge of French and ______work experience.
A. the; a B. 不填; the C. a; 不填 D. the; 不填
2. She also learned a kind of alphabet for the blind, in which different finger positions ______ different letters of the alphabet.
A. stand for B. stand by C. stand up D. stand out
3. I don’t like such books ______ you read.
A. which B. when C. as D. where
