---Why, Emily, you look so energetic!
---Well, I in the gym for a slim figure so far.
A. am working out
B. had been working out
C. worked out
D. have been working out
网友回答
A. am working out
B. had been working out
C. worked out
(答案→)D. have been working out
解析：考查时态：句意：--怎么了Emily，你看起来这么精力充沛。--哦，在现在为止，我一直在体操房锻炼苗条的身材。选D。