We are _______ at the rapid progress Mark has made in this semester.
 A) distinguished B) annoyed C) astonished D) scored

出自:东北农业大学大学英语Ⅲ

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