Look at this ! I＿＿＿＿＿some magazines and＿＿＿＿＿＿this letter.
A. was looking through； found
B. am looking through； find
C. looked through； had found
D. had looked through； finding
网友回答
(答案→)A. was looking through； found
B. am looking through； find
C. looked through； had found
D. had looked through； finding
解析：Look at this!说明东西已找到。紧接着说是怎样找到的。