He was hoping to take part in the driver's license test, but his parents ______ that they won't support him unless he can save money by himself.
【正确答案】
B
【答案解析】因宾语从句(that they won't．．．)中使用一般将来时，but his parents．．．的谓语动词不可能是过去时态，排除选项A和C；由语境判断，不是“将要决定”，而是“现在已经决定”，所以排除D，答案为B。