急！！！作My favorite sport is tennis的特殊疑问句

what's your favourite sport?

上述两句都不完整。
which sport event do you like best? /
what kind of sport do you like best?

没有语法错误
只是习惯而已

不可以,因为这个特殊疑问句中,Which和tennis相对应,是特指,不能用what代替.
what在这里可以引导一般疑问句What is your favorite sport ?