People … speaking quietly in the conference-hall. Complete the sentence by choosing the correct verb.

• Circle the correct answer. 1 You(mustni)/ don't have to stay up lote. You've got on exam tomortow. 2 We mustn't go/ don't hove to go to school today. It's Sundayl 3 You mustn't/ don't hove to touch the cooker It's hotd 4 We mustn'/ don't hove to help

Read the sentence and type in the missing words from the list. The book has two parts: a brief ... and a useful overview of succeeding chapters by the editors. words: discussion, this method, methodology, introduction, our results, originality,

3 Work in pairs. Follow the example and ask questions. Your partner will answer them. Example: How long have Mary and Kate been skiing? Since when have they been skiing? What have they been doing since afternoon? 1) Mary and Kate to ski/since afternoon 2)