II. Rewrite the sentence in the same meaning
16. Perhaps Susan know the address. (may)
Susan
17. The report must be on my desk tomorrow. (has)
The report
18. Smoking is not allowed in the museum. (musn’t) You
19. It isn’t necessary to bring an umbrella. The weather is beautiful. (needn’t) We …………………………………………………………………
20. It would be better to go to the airport two hours before the flight. (should) You ……………………………………………………….