The question is so hard. None of them can answer it _________.

--- The little girl dances so well. Where was she trained?-- She learns all by herself. She ______ goes to any training class.

I often watch TV plays on weekends ,what about you ?--I _____watch them .they are long and boring .

------ I wonder ______ you’ll water this kind of tree. ------- Once a week.

— Have you ________ watched the dolphin show in the Ocean Park in Hong Kong?—Not _________.