PRE-UNIT: Getting to KnowYou CHALLENGE 1 Contractions CHALLENGE 2 Present Tense CHALLENGE 3 PastTense UNIT 1: Balancing Your Life CHALLENGE 1 Adverbs of Frequency CHALLENGE 2 Future Time Clauses with When CHALLENGE 3 Be + Infinitive CHALLENGE 4 Be + Gerund CHALLENGE 5 Imperatives EXTENSION CHALLENGE 1: Adverbial Clauses with Because and So (that) EXTENSION CHALLENGE 2: Time Clauses with When UNIT 2: Censumer Smarts CHALLENGE 1 Get + Past Participle (Causative) CHALLENGE 2 Superlative Adjectives CHALLENGE 3 Comparative Adjectives CHALLENGE 4 Must and Have to CHALLENGE 5 Transition Words EXTENSION CHALLENGE 1: Comparatives and Superlatives with Nouns EXTENSION CHALLENGE 2: Comparative and Superlative Questions UNIT 3: Heusing CHALLENGE 1 Comparing more/fewer/less and most/fewest/least CHALLENGE 2 Present Tense Yes/No Questions and Answers CHALLENGE 3 Information Questions CHALLENGE 4 Past Continuous CHALLENGE 5 Past Continuous with While EXTENSION CHALLENGE 1: Information Questions EXTENSION CHALLENGE 2: Time Clauses with When and While UNIT 4: Our Community CHALLENGE 1 Information Questions CHALLENGE 2 Information Questions about Cost (What, How Much) CHALLENGE 3 Imperatives CHALLENGE 4 Adverbial Time Clauses (PastTense) CHALLENGE 5 Editing EXTENSION CHALLENGE 1: Prepositions of Location EXTENSION CHALLENGE 2: Adverbial Time Clauses (with Future Meaning) UNIT 5: Health CHALLENGE 1 Modal: Should CHALLENGE 2 Present Perfect CHALLENGE3 Future Conditional CHALLENGE 4 Imperatives CHALLENGE 5 Imperatives vs. Declaratives EXTENSION CHALLENGE 1: Meanings of the Present Perfect EXTENSION CHALLENGE 2: Forand Since UNIT 6: Getting Hired CHALLENGE 1 Present Tense CHALLENGE 2 Gerunds and Infinitives CHALLENGE 3 Gerunds after Prepositions CHALLENGE 4 Used to CHALLENGE 5 Would rather EXTENSION CHALLENGE 1: Present Perfect Continuous EXTENSION CHALLENGE 2: Adverbs of Manner UNIT 7: On the Job CHALLENGE 1 Possessive Adjectives and Pronouns CHALLENGE 2 How Much and How Many CHALLENGE 3 Prefer... to CHALLENGE 4 Modals: Could/Might CHALLENGE 5 Would you mind... and Could you...？ EXTENSION CHALLENGE 1: Reported Speech EXTENSION CHALLENGE 2: Three-Word Phrasal Verbs
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