— Perhaps we can go to the home for the elderly to do some voluntary work. — ______ We should give the elderly a warm hand as often as possible.
The task is so hard for e . I don’t know _______________.
Good books help us ___________ a whole new world to me .
There is no air _______ water on the moon .
They don’t know what ___________ the problem .
Don’t try to do everything at once. Take it a bit _______________.