after
                    - After class I have gymnastics ________ two hours.[ ]
 - After class, I have gymnasticstwo hours.[ ]
 - After class I have gymnastics two hours.[ ]
 - She lives at school. So she goes home _____ Friday afternoon. [ ]
 - Taking a walk after supper is good ______ your health. [ ]
 - Every day after he finishes his homework, he switches _____ the TV set. [ ]
 - Look _____ the blackboard and listen _____ the teacher. [ ]
 - After class, I like playing computer games and chatting ______ my friends ______ the Internet. [ ]
 - After class, I like playing computer games and chatting _____ my friends _____the Internet[ ]
 - Walking after meals is _____ us. [ ]