-why didn't you answer my phone call yesterday evening?-oh,sorry.I_____(have)a shower and didn't hear the call

-why didn't you answer my phone call yesterday evening?-oh,sorry.I_____(have)a shower and didn't hear the call
-why didn't you answer my phone call yesterday evening?-oh,sorry.I_____(have)a shower and didn't hear the call

-why didn't you answer my phone call yesterday evening?-oh,sorry.I_____(have)a shower and didn't hear the call
was having