1. not as big as \ bigger
2.tall
3.the best
4.the more, the merrier
5.good
6.farther
7.further
8.the worst
9.the coolest
10.as clever as или cleverer\mote clever -оба варианта употребительны
11.very last
12.elder
13.тут little использовать некорректно, так как little применяется по отношению к неисчисляемым существительным, лучше few - с исчисляемыми, так как речь идет об игрушках - fewer
14.much
15.the saddest
16.dirtier
17.the most interesting, тут неправильно построена первая часть предложения, нет глагола
18.the shiest\the shyest - возможны оба варианта
19.better and better
20.prettier
21.better
22.older, more beautiful
23.difficult
24.darker and darker
25.stronger
1) 1. My bicycle has been stolen.
2. The office will be cleaned later.
3. A new computer system is being used to investigate crimes.
4. Twenty books were destroyed...
5. A lot of questions were being asked by the journalists.
6. Ten silver rings have been sold today.
7. A wallet full of money was found yesterday.
8. Miss Jenkins, the head teacher, will be remembered by the students at our school.
2) 1a hadn't been informed
b hadn't informed
2a am following
b am being followed
3a donate
b is donated
3) 1. is being elected
2. Was (the case still) investigated
3. has (just) been employed
4. are ... organised
5. had been offered
6. is ...excluded
7. will be found (у вас правильно)
8. has been raised