Whiz-kid Wendy has no difficulty in _______(achieve)A grades in all her school subjects.为什么是achieving
问题描述：
Whiz-kid Wendy has no difficulty in _______(achieve)A grades in all her school subjects.
为什么是achieving
答
achieving
答
固定用法：
have no difficulty (in)doing sth：
做某事没困难的意思
所以是achieving
答
in doing sth.
介词后面用动名词
+分哦!
楼上的并不是固定用法 = =