用所给词的适当形式填空

1. Lily isn't tall enough _________ (reach) the apples on the tree.

2. She found it difficult _________ (finish) her homework before 8 pm.

3. You'd better _________ (tell) me the news now.

4. Could you please give me some _________ (advice)?

5. I saw Betty _________ (read) in the classroom when I walked past.