问题补充:
Mother asked the youngest kid with his toy car.
A. what the matter is
B. what is the matter
C. what the matter was
D. what was the matter
答案:
A. what the matter is
B. what is the matter
C. what the matter was
(答案→)D. what was the matter
解析:此处选出的应该是宾语从句,要用陈述句语序,根据前文asked可知用一般过去时。所以选D。句意:妈妈问那个年纪最小的孩子,他的玩具出了什么问题。选D。