4.-Thank you for calling.
--______
A.Don.t mention it.
B.Nice talking to you.
C.That.s fine.
D.Call back again.
出自:大学英语1

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块