题干
When the clerk saw a kind face wrinkled in an apologetic smile, she stood rooted to the ground, ________ whether to stay or leave.
A：wondering
B：wonder
C：to wonder
D：wondered
答案(点此获取答案解析）
A
的值，把后三项放在前面是“－”号的括号中，以下正确的是（ ）