A．atB．ofC．withD．ForWho should be responsible__________t……

单项选择题My aunts business has been doing poorly,but shes hoping that her__________will change.

单项选择题My secretary usually opens my post__________its marked private .

单项选择题It is __________ that text messaging while driving is dangerous.

单项选择题These are the pictures of the hotel__________ we held our annual meetings.

单项选择题I wonder if there is __________ university in your hometown.