请选择并说明原因,
问题描述：
请选择并说明原因,
1.Mrs White found her husband surrounded by letters and papers and_____very worried.
A.looked B.looks C.looking D.to look
2.The cat is the only one of her pets she will have ____on her bed.
A.it sleep B.it sleeping C.slept D.sleeping
3.____was it then ____all these ordinary people seemed to handle it with effortless ease?
A.How;that B.Why;what C;What;how D.What;that
正确答案是CDA
第二题中have+宾语+doing，pet与sleep为主动关系，句子前面已经有先行词了
答
C
her hushand和look是主动关系,故用ing形,而非ed形
A
have sb do sth
A
that后的一句话解释it,此句主体为how was it