_____ to do the work, I should do it some other day.   

 —What do you think we can do for our aged parents?—You __________ do anything except to be with them and be yourself

Some aspects(方面) of a teacher’s job ______ be tiring, and teachers often ______ work at inconvenient hours.

I wish I _______ play tennis with my brother this afternoon, but I have to study for a test.

Anirban Maitra, a professor at Oxford University, Jack’s success would not have been possible.