【题目】Online shopkeepers are supposed to provide goods which _________the quality of their description.
A. catch up on B. keep pace with
C. live up to D. hold on to
在线课程【答案】C
【解析】考查动词词组。A. catch up on赶上；B. keep pace with起步并进；C. live up to不辜负；D. hold on to坚持，紧握。句意：网上店主应该提供符合他们描述质量的商品。Ｃ项符合语境。