问题
选择题
—Alice, you look puzzled．Haven’t you understood it?
—Yes．I _of another problem just now．
A．had thought
B．have thought
C．thought
D．was thinking
答案
答案：D
搜题请搜索小程序“爱下问搜题”
—Alice, you look puzzled．Haven’t you understood it?
—Yes．I _of another problem just now．
A．had thought
B．have thought
C．thought
D．was thinking
答案：D