Susan was just at those pigeons at the time so I don’t think she saw me.A. spottingB. wa

问题补充：

Susan was just at those pigeons at the time, so I don’t think she saw me.

A. spotting

B. watching

C. glaring

D. staring

答案：

A. spotting

B. watching

C. glaring

(答案→)D. staring

解析：动词辨析。Spot认出，用灯光照射；watch观看，欣赏；glare瞪视；stare凝视，盯着看，常和介词at搭配使用。句意：苏珊那个时候正盯着那些鸽子看，所以我想她没有看到我。故选D。