program的過去式和過去分詞怎么寫

　　例句：

　　The program can model a typical home page for you.

　　這個程序可以幫你制作一份典型的主頁。

　　There are still a few residual problems with the computer program.

　　電腦程序還有一些殘留問題。

　　In this class, students will learn how to program.

　　這節課學生將學習編程。