Fill the spaces in the following sentences by using one of these forms + the perfect infinitive of the verbs in brackets. must + perfect infinitive is used for affirmative deductions can't/couldn't + infinitive is used for negative deductions. needn't + perfect infinitive is used for a past action which was unnecessary but was performed. 1. did you hear me come in last night? ~ no, i (be) asleep. 2. i wonder who broke the wineglass; it (be) the cat for she was out all day. 3. you (help) him. (you helped him but he didn't need help.) 4. i had my umbrella when i came out but i haven't got it now. ~ you (leave) it on the bus. 5. he (escape) by this window because it is barred. 6. i (give) £10. £5 would have been enough. 7. i saw a rattlesnake near the river yesterday. ~ you (see) a rattlesnake. there aren't any rattlesnakes in this country. 8. he is back already. ~ he (start) very early. 9. he returned home with a tiger cub. ~ his wife (be) very pleased about that. 10. i bought two bottles of milk. ~ you (buy) milk; we have heaps in the house.
