Use the appropriate form of the infinitive in brackets 1. I

Use the appropriate form of the infinitive in brackets 1. I am glad (to introduce) to you. 2. The box was (to handle) with care. You should (to ask) someone (to help) you. This might not (to happen). 3. Her mood seems (to change) for the worse. We had better not (to speak) to her now. 4. I am sorry (to disappoint) you but I did not mean anything of the kind. 5. He is happy (to award) the first Landscape Prize for his picture. 6. He was anxious (to take) the first place in the figure-skating competition. 7. The poem can easily (to memorize). 8. This poem is easy (to memorize). 9. I did not expect (to ask) this question. 10. There were so many things (to do), so many experiments (to try). 11. The teacher expected him (to give) a better answer at the examination. 12. They are supposed (to experiment) in this field for about a year and are believed (to achieve) good results. 13. He must (to read) something funny; he is smiling all the time