1.     Mary cook on camp stove 2.     Daisy take first-aid kit
3.     You   walking alone
4.     Ben    keep his food in a cool box
5.     We     use mobile phones
​

1.     Mary must cook on camp stove

2.     Daisy must take first-aid kit

3.     You mustn't walking alone

4.     Ben must keep his food in a cool box

5.     We mustn't use mobile phones

1. MUST

2.MUST

3.MUSTN'T

4.MUST

5.MUST

Объяснение:

я так написал и получил 5