—Iseldomkeep

问题详情：

 — I seldom keep ________ on my computer for more than an hour.

   — Is that so? But you seem to be comfortable _______ games on your iPad for hours.

    A. working; playing     B. working; play      C. to work; playing

【回答】

A

知识点：动词和动词短语

题型：选择题