Unit 1 Wanting to Find Success！ Practice Communication Skills：Introductions Grammar：Tense (1) Reference AnswersUnit 2 The Pursuit of Happiness Practice Communication Skills：Making Requests Grammar：Tense (2) Reference AnswersUnit 3 The Difference between Plants and Animals Practice Communication Skills：Invitation Grammar：Tense (3) Reference AnswersUnit 4 Do Animals Think? Practice Communication Skills：Offering Help Grammar：The Singular or Plural Forms of Predicates Reference AnswersUnit 5 The Energy Crisis Practice Communication Skills：Suggestions Grammar：The Consistency of Subjects and Predicates (1) Reference AnswersUnit 6 Family Practice Communication Skills：Greetings Grammar：The Consistency of Subjects and Predicates (2) Reference AnswersUnit 7 English Meals Practice Communication Skills：Making Apologies Grammar：Adjectives Reference AnswersUnit 8 How Americans Eat and Drink Practice Communication Skills：Complaints Grammar：Comparison (1) Reference AnswersUnit 9 People and Colors Practice Communication Skills：Approval and Disaproval Grammar：Comparison (2) Reference AnswersUnit 10 Japanese Festivals Practice Communication Skills：Making Phone Calls Grammar：Infinitives Reference AnswersUnit 11 Money and Finance Practice Communication Skills：Saying Goodbye Grammar：Gerund Reference AnswersUnit 12 Insurance Practice Communication Skills：Expressing Thanks Grammar：Participles Reference Answers
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