语法填空
（1）Picking up her “Lifetime Achievement” award，proud Irene ___declared__(declare) she had no plans ________ (retire) from her 36-year-old business.
（2）When we got a call ________ (say)she was short-listed，we thought it was ___a__ joke.
（3）Earth Day，_______(mark)on 22 April，is an annual event aiming to raise public awareness about environmental protection.