The library has **advanced** books for older students, but simple books are also **available** for younger kids. The librarian will **allow** you to borrow two books at a time. Remember to return them on time!
上面这段是ds生成的,用了advanced,available和allow三个生词,除了这三个词句式和单词都很简单,我觉得非常适合他背单词用