Đáp án:

This book is mine.

Jane and Peter are married.

My brother is here at the moment.

Many people are in the bank.

We are in England.

It is Monday today.

I am a hairdresser.

My name is Alexander.

There are many people in this class.

Are Ane and Alice sisters?

Is this car yours?

Am I in your way?

Are you twenty-five years old?

Is the Smiths divorced?

Is this your new bicycle?

I am a student.

The teachers are in the room.

The cat is on the table.

The dog is under the table.

This book is cheap.

Giải thích:

* Cấu trúc tobe ở thì hiện tại đơn:

(+): S + tobe (is/am/are) + O

(-): S + tobe (is/am/are) + not + O

(?): Tobe (is/am/are) + S + O?

`1.` is

`2.` are 

`3.` is

`4.` are 

`5.` are 

`6.` is 

`7.` am

`8.` is 

`9.` are 

`10.` Are

`11.` Is

`12.` Am

`13.` Are 

`14.` Are

15.` Is 

`16.` am

`17.` are 

`18.` is 

`19.` is

`20.` is

`-` Cấu trúc:

`(+)` S + am/ is/ are + N/ adj

`(-)` S + am/ is/ are + not + N/ adj

`(?)` Am/ is/ are + S + N/ adj..?

`-` Chủ ngữ là ngôi thứ ba số ít `->` is

`-` Chủ ngữ là ngôi thứ nhất số ít `->` am

`-` Chủ ngữ là ngôi thứ nhất, hai, thứ ba số nhiều `->` are