Some children don’t know ________ for their parents.

How will your father go to Shanghai tomorrow?—I don’t know ____ .

What’re you _____?—My husband’s health problem _____ me a lot.

）I’ll_________ advertisements after school so that we can tell people about the park clean-up.

What do you think of our plan?—I think it’s reasonable. But _____ Bob, what we did is a waste of time.[ ]