很高兴为你解答.
保证正确率~!
正确答案是：
1.【 What 】 【 do】 many families【 do】 【 to】celebrate the holiday?
2 【 How】【 do】they celebrate the Mid Autumn Day?
3 【What 】【 did】Mr Green【 come】 here 【 for】?
4.【 Does】Alice【 have】a tennis racket?
5.There is nothing wrong with the computer,【 is 】【there】?
祝开心~!