Choose the correct item 1) you( shouldn't/couldn't) tell anyone your real name online. 2) you (don't have to/shouldn't ) be an expert to scuba dive 3) suzy ( was able to/had to) take lessons before she went diving. 4) you (might/should) chek the weather before you go. 5) you ( don't have to/mustn't) swim alone. 6) some jellyfish stings (must/can) kill you 7) tim( was able to/ could) win the race in the end. 8) you (must/ may) look out for warning signs. 9) dan (had to/could) play the piano when he was six.