Although Mary will graduate from high school in June,she has not yet decided _____ a college.
问题描述：
Although Mary will graduate from high school in June,she has not yet decided _____ a college.
A.on B.about C.at D.to
The passengers were kept waiting in the hall for half an hour and then allowed _____ on another plane.
A.to get B.getting C.them to get D.their getting
答
A.on
decide on 是词组.意思是 考虑后决定.这句话是说 尽管Mary将会在六月份从高中毕业,她还没有决定去哪一个大学.
其他的介词都不合理 decide about 和 at 没有这种用法
decide to do sth 是跟动词的
A be allowed to do sth 被允许做某事
固定搭配.