单项选择题
--I wonder why Mary is so unfriendly to us.--She is _________than unfriendly，I’m afraid.（）
A．shyerB．much shyerC．shy moreD．more shy
单项选择题 The author states that many educators feel that（）
单项选择题 Before you arrive at work，you should（）．
单项选择题 ——______they ______an English class？——No．they aren’t．（）
