I couldn't /can't come to the picnic tomorrow . I could /can swim when I was very young. You must/have remember to put the milk back in the fridge. If you are going out in the rain , you should/can take an umbrella. Do you have to/ must tidy your room every week? I don't know if I should/have to tell you the secret. She must/has stay in tonight. Should/can I watch TV now ,please ? I don't know you could/should speak French when you were little. Maybe your dad must/ could drive us to the party. Do you think I have/ should tell him.