题干
Helen and Bob are working hard these days because they will put ______ a short play in the school Talent(才艺) show.
A：over
B：away
C：off
D：on
答案(点此获取答案解析）
D
Helen and Bob are working hard these days because they will put ______ a short play in the school Talent(才艺) show.
A：over
B：away
C：off
D：on
