根据要求改写句子，每空一词。

小题1:The boy likes making model planes at home. (对划线部分提问)

_______ _______ the boy like _______ at home?

小题2:There is a knife on the table. (单数改为复数)

There ______ ______ _______ on the table.

小题3:I often watch two hours of TV on Sunday. (对划线部分提问)

______ ______ TV do you often watch on Sunday?

小题4:We play some special Halloween games this week. (改为否定句)

We ______ play _____ special Halloween games this week.

小题5:The park opens at 8:00 a.m. and closes at 5:00 p.m. (改为同义句)

The park _______ _______ from 8:00 a.m. to 5:00 p.m.

节流管汇的功用？压井管汇的功用？