II. Grammar: Complete the sentences using the verbs in Present Perfect.

We need to form the Present Perfect tense for each sentence. The structure of Present Perfect is 'have/has + past participle'. 1. Jack (wash) the dog. * Answer: **Jack has washed the dog.** ('has' because Jack is singular, 'washed' is the past participle of 'wash'). 2. Father (clean) his car. * Answer: **Father has cleaned his car.** ('has' because Father is singular, 'cleaned' is the past participle of 'clean'). 3. The boys (buy) some sweets. * Answer: **The boys have bought some sweets.** ('have' because 'the boys' is plural, 'bought' is the past participle of 'buy').