25. ---- Ricky, why hasn’t Billy been with us these days?---- Oh, he is for next month’s 4

发布时间:2020-08-16 07:22:38


25. ---- Ricky, why hasn’t Billy been with us these days?
---- Oh, he is     for next month’s 400m race.
A. standing out
B. taking up
C. backing out
D. working out

网友回答

A. standing out
B. taking up
C. backing out
(答案→)D. working out
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