2. I tried to concentrate on my homework but my eyes kept _____ away from the workbook.
(A) dissecting
(B) lapsing
(C) rambling
(D) straying

A) dissect 解剖（尤指屍體或植物）(v.)

In biology classes we used to dissect rats.

B) lapse 過失，小失誤 (n.)

a lapse of concentration 走神

[ lapse into sth ] ( 言談舉止）陷入（消極的狀態）；顯得異常

No one could think of anything more to say, and the meeting lapsed into silence.

C) rambling 雜亂無章的；冗長蕪雜的；漫無邊際的 (adj.)

a long rambling speech 冗長而不著邊際的講話

D) stray 偏離原路；越過限定區域 (v.)

A herd of cattle had strayed into the road. 一群牛偏道了，上了公路。

They got lost when they strayed too far from the path. 他們偏離小路太遠，迷了路。

Sorry - I've strayed from the subject.  抱歉，我偏離主題了