Question

【题目】With all his attention （focus）on his experiment, he has no time to spend with his family.

Answer 1

【答案】focused
【解析】句意：由于把注意力全放在实验上,他没有时间陪家人。此处使用了with复合结构，attention和focus之间是被动关系，所以用过去分词，短语focus one's attention on，意为“把注意力集中在……上”。因此填focused。