问题补充：
A tremble of fear came over him his eyes wandered in the direction of the grey object in the shadow.
A. at every time
B. every time
C. every time when
D. every time that
答案：
A. at every time
(答案→)B. every time
C. every time when
D. every time that
解析：A tremble of fear came over him是一个简单句，his eyes wandered in the direction of the grey object in the shadow.也是一个简单句，两个句子要用连词连接，四个选项中只有every time是连词，意为：每次。所以选B。
