Vi. a) write the interrogative and negative forms of the following sentences. b) ask and answer questions on the following statements as in the model. use the present perfect tense. add a sentence or two to develop a situation. 1. mary has already ironed the table-cloth.2. i have already turned off the light. 3. the girls have already done the room. 4. it takes me long to prepare for my english lesson. 5. it has taken peter five minutes to shave.

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