как образовать форму множественного числа a bike

ставится объясните

enclosing, by, sent, stocks, low, within, hear, to doing, with, look.

Thank you ... your ... ... 16 November, ... which you enquire ...
toys imported ... Hong Kong. We are ... to hear that there is a ... for
goods ... this type ... Northern Ireland.
We are ... our price list and terms of ..., and our catalogue has
already been ... ... separate post.
As you will notice, our prices are extremely ..., and since we hold
large ... of all models ... all times, we can promise delivery ... a week ...
receipt ... orders.
We hope to ... from you soon, and ... forward ... ... business ... you помоги пожалуйста)

is............................................................

There are........................................................

2)Write about what you like and what you don"t like doing

I like.........................................................

I don"t like........................................................

A farm...
A park..
A box..
A fox
A potato..
A tomato..
An apple..
A nut...
A carrot..

Fish, woman, foot, money, leaf, information, shelf, box, child, sheep, city, boy, day, knife, family, pen, book, music

№2. Поставьте существительные в следующих предложениях во множественное число (обратите внимание на изменения в указательных местоимениях и формах глаголов):

1. He keeps his toy in a box.
2. This town is very large.
3. The student put his book on the desk.
4. That house is new.
5. Is this a good student?
6. What is your name?
№3. Поставьте существительные в следующих предложениях в единственное число (обратите внимание на изменения в указательных местоимениях и формах глаголов):

1. Your children are very good.
2. My feet are tired.
3. These flowers are beautiful.
4. Those are boxes.
5. Are there mice under the bed?
6. My teeth are yellow.