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
—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