Thefamouspicturewentmissingin2012andnobodyitsinceever.()A.seesB.sawC.hadseenD.hasseen
The famous picture went missing in 2012 and nobody _____it since ever.( )
A. sees
B. saw
C. had seen
D. has seen
高分!求乱码翻译!急!彻W(T€\1QlW(0\2?徢bKg:OS殒bKg:T\3檓N员?b彻l? 2020-04-06 …
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某城市白昼时间的小时数D(t)的表达式为D(t)=3sin[2π/365(t-79)]+12,其中t 2021-01-12 …