问题补充：
He is recovering now. is no need to call in a doctor.
A. It
B. There
C. This
D. That
答案：
A. It
(答案→)B. There
C. This
D. That
解析：There is no need to do sth.属于固定句型。常考的类似句型还有：there is no difficulty / no trouble doing sth. 做某事无困难；there is no point / no sense doing sth. 做某事无意义；there is no doubt that… 毫无疑问……。故本题答案为B.
