Many students are chatting online, which wastes them plenty of time.
A. crazy about
B. connected with
C. worried about
D. anxious about
网友回答
(答案→)A. crazy about
B. connected with
C. worried about
D. anxious about
解析：句意：许多学生对网聊很疯狂，那浪费了他们大量的时间。Be crazy about对……对……很疯狂 be connected with与……连接 be worried about对……担心 be anxious about担忧，选A。