The old man, together with his neighbors,__________the performance when it began to rain.

单项选择题Who should be responsible__________the accident

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.