---Will you please stay here a little longer? ---Sorry, I          . I           eat dinner with my mother. She’s coming.

—What did the teacher say just now?---Sorry. I didn’t catch it. I        about something else.

So far, most of the work _______ by others, it’s your turn to do the rest of it. 

As they get older, they continue     the hobby.

This kind of iPad ______ in our computer shop. It ______ very well.