A:on; o
B:in; i
C:on; i
D:in; o
① School is over ____ A. 几点了?
② What time is it? ____ B. 让我们去操场吧。
③ It's time for lunch. ____ C. 九点十分。
④ Let's go to the playground. ____ D. 放学了。
⑤ It's nine ten.____ E. 该吃午饭了。