根据句意和所给提示, 在横线上写出空白处所缺单词的正确形式。

（1）Boys and girls, work hard! I believe you will __________（成功）in the exam.

（2）Tomorrow is Linda’s ________（nine）birthday. Let’s buy some gifts for her.

（3）Don’t talk in the library. We’d better keep s________.

（4）Last weekend, all of us went for a picnic e_________ Tom because he was ill.

（5）Qi Jiguang is one of the greatest national h________ in China. We will remember him forever.