Complete the sentences with the verbs from the box. can/ can't/ may/ may not/ must/ mustn't/ 1) it's very not.you water the flowers. 2) nick play chess very well. 3) i go for a walk? - no, you is your homework? 4) you swim here. the water isn't clean. 5) soory, i help you now. 6) it's raining. i take my umbrella.