Complete the sentences with can, can`t, have to or don`t have to.
In tennis you ... touch the net with your hand or racket.
In tennis you ... hold the racket with your left hand.
In football, goalkeepers ... run all time.
In horse-riding, you ... wear a riding hat.
In undwater hockey, you ... wear flippers but they help you to swim quickly.

1.can't                                                                                                              2.don't have to                                                                                                3.can't                                                                                                            4.have to                                                                                                         5.don't have to