题目
1． —Shenzhou-18 with three astronauts was sent up on April 25th, 2024. It's such ____ exciting event.
—Yes. And the astronauts are our heroes. I want to be ____ useful person like them.
—Yes. And the astronauts are our heroes. I want to be ____ useful person like them.
A.
A. a, an
B.
B. an, a
C.
C. a, the
知识点：表示数量“一”章节：未标注