Mr.Smith was to be a doctor but he became a teacher when he grew up.A. demandedB. supposed

问题补充：

Mr.Smith was to be a doctor but he became a teacher when he grew up.

A. demanded

B. supposed

C. suggested

D. agreed\

答案：

A. demanded

(答案→)B. supposed

C. suggested

D. agreed\

解析：“be supposed to do/to be”为固定搭配，意为“应该、大家认为是”。

答案：B