None of the students watched the teacher______

Lost in the mountains for three days, what the three men were able to do was the help of helicopters.

_______ of the students in our class _______ money to the quake-hit areas these days.

Do you have any idea what Paul does all day?—As I know,he spends at least as much time playing as he______

_____ you didn’t know the rules won’t be an excuse foryour failure to report.