My father often

【题目】My father often ______ his book ______ his office. (       )

A.leaves; behind B.leaves; in C.leave; behind

【答案】B

【解析】

句意：我爸爸经常把他的书落在办公室。把东西落下动词用leave，习惯性动作用一般现在时态，主语是爸爸，谓语动词用第三人称单数形式；在办公室介词用in；behind表示在……后面，不符合语境。故选B。