| 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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