_________ some mammals came to live in the sea is not known.A、WhichB、SinceC、Al

游客2023-11-21 69

问题 _________ some mammals came to live in the sea is not known.

选项 A、Which
B、Since
C、Although
D、How

答案 D

解析 “HOW”引导的名词从句做主语。

转载请注明原文地址:https://tihaiku.com/zcyy/3207146.html

相关试题推荐

随机试题

最新回复(0)

________hedaydreamed,Petersawfiguresinthesky.A、UntilB、SinceC、WhileD、D