The light has been since Mary came back home 对since mary came back home 提问

The light rail has been in use since 2002同义句 The light rail has been _ _The light rail has been in use since 2002同义句 The light rail has been _ _since 2002 The light has been since Mary came back home 对since mary came back home 提问 英语翻译( )( )has been( )( )( )people's living conditions by the government. The hear railway station has been in s--- since 2002The hear railway station has been in s--- since 2002 A lot __to save the old man's lifeA have been done B has been done It's has been accepted It's hot .The temperature___35 degrees A has been raised at B has risen to C has been risen forD has raised 答案为什么是B?raise at The dream has been awake A lot (has been done)to save the old man's lifeA lot (has been done)to save the old man's life.为什么要这样填 It's the day beliebers have been waiting for.Justin Bieber has arrived in the valley. it's one of the most important meetings____this yearA that has been heldB which has been heldC that have been heldD which have held 英语翻译In this paper,the degradation of an azo dye Orange G (OG) on nitrogen-doped TiO2 photocatalysts has been investigated under visible light and sunlight irradiation.Under visible light irradiation,the doped TiO2 nanocatalysts demonstrated h In this paper,the degradation of an azo dye Orange G (OG) on nitrogen-doped TiO2 photocatalysts has been investigated under visible light and sunlight irradiation.Under visible light irradiation,the doped TiO2 nanocatalysts demonstrated higher activi It is known to all that light travels in straight lines.When the plane is to take off has not been announced . 是什么从句及句子成分 Mr Wang is one of the teachers in our school to the U.S .twice.A who has been B that has been C which has been D who have been 出现这样的提示怎么办?A Buffer overrun has been detected which has corrupted the program's internalA Buffer overrun has been detected which has corrupted the program's in ternalstate.the Program cannot safely continue execution and must now Where’s your mother-she's to the shop for some food A has gone B has been C have been D have gone The fadtory has been here since the 1970s 划线部分（since the 1970s )提问 ———（三个空）the factory been here?