请用适当的词完成下面这篇短文，并把所缺单词填写在答题卡指定的位置上。每个空只能填写一个形式正确、意义相符的单词。

The children are   小题1: games in the park. They are having a good  小题2: . It’s four o’clock now. And it’s time to go   小题3: . Miss Gao begins to  小题4: the children’s name. “Tom!” “I’m  小题5: ,” Tom answers. “Han Meimei!” “Yes,” answers Han Meimei. “Liu Ming!” There’s no   小题6: . “Liu Ming” Miss Gao calls again. “ 小题7: is Liu Ming ?” Miss Gao asks. The children don’t   小题8: .

Well, Liu Ming is behind a big tree! He’s eating a big apple. He doesn’t 小题9: to let the other children know. Could Miss Gao  小题10: him?

混炼胶的加工性能对产率有很大影响，良好的配方设计可以提高产率（）以上。

A、50%

B、30%

C、20%

D、10%