She wrote a letter to her friend.

她给朋友写了一封信。

同一单元的其他句子

• I visited my grandparents last weekend.我上周末看望了我的祖父母。
• Did you play football last Saturday?你上周六踢足球了吗？
• She watched a movie with her friends.她和朋友们看了一场电影。
• We cleaned the house together.我们一起打扫了房子。
• He stayed at home and read books.他待在家里看书。