根据句意和汉语注释，写出单词的正确形式。

根据句意和汉语注释，写出单词的正确形式。
小题1:Here is a lot of ___________ (信息) on the Internet.
小题2:Simon’s busy _______________(修理) the computer now.
小题3:Do you know the ________________(首都) of these countries?
小题4:Tomorrow will be his grandpa’s _________________(九十) birthday.