---- Hi, Vera, have you checked the account yet?
---- Certainly, I ______ it five times even though you told me to do it twice．
A．checked B．will have checked
C．have been checking D．had checked
---- Hi, Vera, have you checked the account yet?
---- Certainly, I ______ it five times even though you told me to do it twice．
A．checked B．will have checked
C．have been checking D．had checked
A