13. – Why does he look so worried? -- His dad gotin an accident.A. to be hurting B. hurt C

问题补充：

13. – Why does he look so worried?

-- His dad gotin an accident.

A. to be hurting

B. hurt

C. hurting

D. to hurt

答案：

A. to be hurting

(答案→)B. hurt

C. hurting

D. to hurt

解析：可联系答.案.网客服索取。