Did you hear ab out Jim's accident?Yes,it must have been_.

Did you hear ab out Jim's accident?Yes,it must have been_.
Did you hear ab out Jim's accident?Yes,it must have been_.
A,for B,during C,while D,already 但我选的是B
2 Will you come to our house for dinner this afternoon?_I'd like to,I can't.
A,despite B,although C,however D,otherwise 但我选得A 我查的A是介词,B是连词
第一题打错了 那个ab out 是about