At first, little______that we were sitting on top of a fundamental discovery in

游客2024-10-26 41

问题 At first, little______that we were sitting on top of a fundamental discovery in AIDS research.

选项 A、we knew
B、we did know
C、did we know
D、do we know

答案 C

解析

转载请注明原文地址:https://tihaiku.com/zcyy/3818480.html

相关试题推荐

随机试题

最新回复(0)

Elizabethcouldnotrefuse,______sheforesawlittlepleasureinthevisit.A、sinc