----I am really surprised that a policeman in his car __________ have hit several common pedestrians, killing one and injuring three.----Yes, If one __________ ask for trouble, what can we say?

According to our school rules, students ________ not carry mobile phones when taking a exam. 

—The weather isn't good enough for an outing, is it?—Not in the least. We can't have ______ at this time of the year.

—We are worried about Tom. Why hasn’t he come back?—Don’t worry. He ______ in a traffic jam.

— I want someone to write the composition for me. 　— No! It’s a rule in our school that as a student, you _______ depend on yourself.