at the time能不能引导时间状语从句____she looked up,the strange man had disappeared.A at the time B at the time when

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at the time能不能引导时间状语从句____she looked up,the strange man had disappeared.A at the time B at the time when
at the time能不能引导时间状语从句
____she looked up,the strange man had disappeared.
A at the time B at the time when

at the time能不能引导时间状语从句____she looked up,the strange man had disappeared.A at the time B at the time when
选B
这应该是when引导的定语从句,先行词是time,
不是all the time 引导时间状语从句.
all the time 那时,she looked up是补充说明time的
all the time 通常用于过去时句子中,指某件事情发生的“当时”、“那时”.例如：
Many people saw the strange thing happen at the time．当时,许多人都看到了这件奇怪的事情的发生.
B．有时,at the time的后面可接“of．．．”短语.这时,它表示“在（某事态）发生的时候”或“在……的时代”.例如：
Were you in San Francisco at the time of the big earth quake in 1989?1989年旧金山发生地震时,你在那里吗?
It happened at the time of King Alfred．事情发生在阿尔弗雷德国王时期.