问题
选择题
--What did the professor ask us to do just now?
--Sorry, I ______ about my trip to the Wolf Hill at the weekend.
A．had thought
B．was thinking
C．thought
D．think
答案
答案：B
搜题请搜索小程序“爱下问搜题”
--What did the professor ask us to do just now?
--Sorry, I ______ about my trip to the Wolf Hill at the weekend.
A．had thought
B．was thinking
C．thought
D．think
答案：B
生 我觉得用不着改变。铃声不就是一种信号嘛，听得清楚就行了。