Помогите решить 1 задание

1)This room is bigger and more comfortable than that one.
2)Your work is better than that of John.
3)Mary is the brightest student of your group.
4)Take this knife. It is sharper than yours.
5)Dont sit down here.I think it is the most uncomfortable armchair in our flat.
6)George is older than William. He is he oldest in our family.
7)Where is your older brother?
8)It is the most interesting book in my collection.
9)This street is narrower and quieter than that one.
10)Which is the largest room in your flat?
11)There are more students in group 3 than in group 2z
12)Which is the longest day of the year?
13)Two heads are better than one.
14)Which is the nearest way to the University?
15)My tape-recorder is better than yours.
16)Helen is the noisiest girl in our group.
17)In our house there are more flats than in hers.
18)Mike is taller than Nick.
19)July is the hottest and the driest month in the year.
20)This book is as interesting as the one you are reading.
21)Harrods is the most expensive shop in London.
22)There is much snow in the garden than in the streets.
23)There is less sugar in this sugar-basin than in that one.