Как ответить на вопрос: have you got any brothers or sisters? если их у меня нет

Ido not have any brothers or sisters. или же : i have not got any brothers or sisters

Kate was the (most practical) of the family. it is the (worst) mistake he has ever made. this good-looking girl is the (best) student in our group. she speaks italian (better) than french. i think jack is (cleverer) than his brother. please, send the books back without (further) delay. which is the (most beautiful) place in this part of the country? the volga is (shorter) than the mississippi. it is as (cold) today as it was yesterday. which building is the (highest) in moskow. asia is (larger) than australia. this is the (easiest) task we*ve done. my sister speaks english (better) than i do. which of these two performances did you enjoy (most)? the fire was put out (more quickly) than we expected.

1) i think that the new salesman is than the last one. (more hardworking) 2) this is country in the world. (the poorest) 3) my new dictionary is a lot than the last one. (more useful) 4) do you think french is as to learn as english? ( difficult) 5) this system is than the last one we had. (easier) 6) she was feeling than she had been earlier.(worse) 7) who's , do you think? (the richest) 1) я думаю, что новый продавец более трудолюбив, чем предыдущий.2) это самая бедная страна в мире.3) мой новый словарь намного более полезен, чем предыдущий.4) как вы думаете, французский так же трудно изучать как ? 5) эта система проще, чем  предыдущая, которая у нас была.6) она чувствовала себя хуже, чем раньше. 7) кто самый богатый бизнесмен, как вы думаете?