Question

【题目】It would be(believe) that such a gentleman should be so rude to his parents.

Answer 1

【答案】unbelievable
【解析】句意：这样一位绅士对他的父母竟然如此粗鲁，这简直不可思议。be 动词后面用形容词做表语，所以答案是unbelievable。