111. These picture books are perfect for showing to pre-school children.

29. I＇m much obliged to you for your help. ________

28. I apologize for the terrible mistake. ________

27. Congratulations! We all feel so proud of you! ________

26. Hello, Mary. I＇d like you to meet Mark. ________

25. She has worked at the cafeteria _______ nine months.

24. There are two reasons _______ I do not want to go out tonight.

23. He gave a(n) ________ answer to the question.

22. The party ________ to be very successful.

21. He is more of a director ______a producer.

20. What a lovely present! I like it so. ________