Look , your parents_______ you at the bus stop.

Steps must be taken _________ this kind of disasterwill never happen again.

He tried to cope with the ever-increasing burden of his work, but finally he _____ and had to take a complete rest．

English is _______ boring to me.

There is only three days lef,but we still have a pile of papers to deal with.—- Don’t worry. We have already______ two thirds of them after all