He began to write two hours ago. He ______ have finished the article now.
A. ought
B. must
C. would
D. had to
出自:中北大学-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