My friend has time and again advised that my son __ a private tutor for half a year.

问题描述:

My friend has time and again advised that my son __ a private tutor for half a year.
A.have B.had C.would have D.having

A == SHOULD HAVE
advise后的宾语从句的谓语动词是 should+动词原型,should可以省略
翻译
我朋友多次建议这半年我的儿子可以有一位私人教师