﹣﹣﹣_________do your parents come to visit you in the US, Tom?
﹣﹣﹣Once a year.( )
How often
How long
How soon
How far
— does Jim to school? —By bus.
—The boy never watches TV in the evening, _______ he? -_______, but only at the weekend.
—You haven’t watched the movie《Lost in Thailand》,have you? --______________. How I want to watch it again!
----______will he come back ? -----In a week.
They have to do a lot of work, ________ they?