二、选择题。
21. Good luck your new diet, Amy.
A. for B. with C. to D. in
22. - Do you know the boy under the tree?
- one?
A. Who B. Whose C. Which D. When
23. At school Lucy is a student. She is good at all her lessons.
21. Good luck your new diet, Amy.
A. for B. with C. to D. in
22. - Do you know the boy under the tree?
- one?
A. Who B. Whose C. Which D. When
23. At school Lucy is a student. She is good at all her lessons.

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