Have you ever worked as______volunteer during the COVID﹣19 pandemic (新冠疫情)?
Yes. It was_____unforgettable experience for me.( )
A. |
an; an |
B. |
an;a |
C. |
a; an |
D. |
a;a |
Have you ever worked as______volunteer during the COVID﹣19 pandemic (新冠疫情)?
Yes. It was_____unforgettable experience for me.( )
A. |
an; an |
B. |
an;a |
C. |
a; an |
D. |
a;a |