Question

【题目】When I got to school, I realized I ______ my backpack at home.
A.left
B.had left
C.forgot
D.had forgotten

Answer 1

【答案】B
【解析】句意：当我到学校时，我才意识到我把双肩包落在家里了。把…落在…用leave，又因为是过去完成时，故选B。