The US President Obama told the students that he by a single mother who were strict with

问题补充：

The US President Obama told the students that he by a single mother who were strict with him and wished him great success in his studies.

A. will have been brought down

B. has been carried out

C. was brought up

D. was about to be cared for

答案：

A. will have been brought down

B. has been carried out

(答案→)C. was brought up

D. was about to be cared for

解析：短语辨析及语态时态。Bring down打倒，打死；carry out执行；bring up养育，教育； care for照顾，喜欢。句意：美国总统奥巴马告诉学生们他被一位对他很严厉的、希望他在学习上取得巨大成功的单身母亲抚养长大。结合语境可知本句描述的是过去发生的动作，奥巴马是被养育的对象，故用被动语态。选C。