Have you ever worked as______volunteer during the COVID﹣19 pandemic (新冠疫情)?
Yes. It was_____unforgettable experience for me.( )
an; an
an;a
a; an
a;a
They ____about a comedy this time yesterday.( )
A.were talkingB.are talking
C.have talkedD.will talk
Jane ____ to call me last night, but she didn't.( )
A.supposedB.supposes
C.was supposedD.is supposed
Could you please speak a little louder? I ____ hear you very well.( )
A.can'tB.mustn'tC.shouldn'tD.needn't
We couldn't buy anything because ____of the shops were open.( )
A.allB.bothC.nothingD.none
Did you read your favorite books ____ April 23? It was World Book Day.( )
A.forB.atC.onD.in