题目内容：

we had a ___discussion about the matter yesterday
A heated
B heating
C heater
D heat

优质解答

选A
we had a _ heated __discussion about the matter yesterday.
句中, yesterday提示是过去时态,A项heated是过去完成形式.
也可认为A项是一个形容词,意为激烈的,热烈的.