B1 - 08 - Have - To - Must - Obligation

B1 - 09 - Zero - Conditional

B1 - 10 - First - Conditional

B1 - 11 - Coordinating Conjunctions

B1 - 12 - Subordinating Conjunctions - Time

B1 - 13 - Subordinating Conjunctions - Reason

B1 - 14 - Subordinating Conjunctions - Conditionals

B1 - 15 - Second - Conditional

B1 - 16 - Adjective - Clause

B1 - 17 - Noun - Clause

B1 - 18 - That - Clause - After - Verbs

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B1 - 15 - Second - Conditional

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