—Have you finished your program,Yang Wei?—I’m afraid I __________ forgot about it.

The manager of the company told us that very little _________ was made of the waste material in the past.

The Browns stood staring at the happy _______ of children playing in the park.

You've missed your ____， and you will have to wait for the next round. 

He is out of work now but he gets a good _____ from his investment.