Что выражает глагол should ?

__Well, what kinds of books does your friend like read?
__Does your friend prefer short stories or novels?
__Have a look at this book.It`s a new collection of science fiction stories.It`s very popular with our customers.
1.Hello. May I help you?
__He enjoys reading science fiction.
__I think this book will be a good present.Thank you for your help/
__Well, he is usually very busy at work and doesn`t have much time to read.
__ I`d like to buy a present for my friend, but I don`t know what book to choose/

1) your mouth
2) your right hand
3) your right leg
Выберите правильный вариант, пожалуйста.

1) short —
2) easy —
3) brand —
4) second —
5) part —

time
sleeved
new
going
looking
hand