Question

【题目】The reason he gave for his absence is he was drunken.

Answer 1

【答案】that/which；that
【解析】句意：他给出的缺席的原因就是他喝多了。reason在定语从句中作宾语指物，用that/which；后面根据句意“……原因”用来解释主语内容用that，因此答案为that/which；that。