2012-11-06 09:41 自考365
单选题
1.[2004.10]Sometimes very young children have trouble ___ the right from the wrong.
A.for separating
B.to separate
C.having separated
D.separating
正确答案: D
答案解析: have trouble (in)doing表示:做什么有困难。
自考365
2022-01-16
自考365
2022-01-16
自考365
2022-01-16