Надо вставить правильные! нужно 1.americans have an ability to live through difficulties. they are : risk-taking/willingness to experiment /tough 2. they like to move from one city to another. they are : mobile/friendly/hospitable, indeed. 3. he is well-mannered. thats why he is : formal/ risk-taking/ tough , with everybody. 4.tim likes to spend free time with friends. he is so : self-reliant/ self-confident/ communicative. 5. she never goes alone in the street at night. she is really cautions/ polite / submissive.
2 mobile
3 formal
4 communicative
5 cautions.