16. Buy an umbrella. It (need, should, mustn't, might) rain tomorrow 17. You (shouldn't need, needn't may not) leave small objects lying around 18. Such objects (must, need, may, mustn't) be swallowed by kids. 19. People (couldn't neednt, mustn't, may not) walk on the pebble beach. 20. Drivers couldn't needn't mustn't, may not) go when the traffic lights are yellow 35 Info 66​