No sooner______ a paper on his latest research than he was asked to write anothe

游客2023-11-13 39

问题 No sooner______ a paper on his latest research than he was asked to write another for a conference.

选项 A、he had finished
B、he finished
C、did he finish
D、had he finished

答案 D

解析

转载请注明原文地址:http://tihaiku.com/zcyy/3183000.html

相关试题推荐

随机试题

最新回复(0)

Thescientistshaveabsolutefreedomastowhatresearchtheythinkitbestto__