Thediscussion alivewhenaninterestingtopicwasbroughtin...

來源：國語幫 2.56W

The discussion alive when an interesting topic was brought in.

A．was coming B．had come

C．has come D．came

句意：當引入一個有趣的話題時，討論就活躍起來了。考查時態辨析題。根據when…was brought in可知，come也是過去發生的動作，需用一般過去時，故選D。