问题补充：
单选题
Mary is very clever and_____ worth teaching , but her brother is not .Look he is now _____ asleep in class.A.very ; veryB.much ; veryC.well ; veryD.well ; fast
网友答案：
热心网友 1楼
D解析 题意：玛丽很聪明，很值得教，但是她的弟弟不。看他正在课上熟睡呢。be well worth doing sth. 很值得干某事；fast asleep 熟睡。
