1.It are a long time since we last talked to each other

Lỗi: was

Sửa: was-> is ( cấu trúc  it is a long time)

2.he usually comes home at 5 o'clock, but this week he works very late

Lỗi: works

Sửa: works-> worked

3.your window need to clean immediately. they are very dirty

Lỗi: need

Sửa: needs 

1.It are a long time since we last talked to each other

Lỗi: was

Sửa: was-> is ( cấu trúc  it is a long time)

2.he usually comes home at 5 o'clock, but this week he works very late

Lỗi: works

Sửa: works-> worked

3.your window need to clean immediately. they are very dirty

Lỗi: need

Sửa: needs 

1.It are a long time since we last talked to each other

Lỗi: was 

Sửa: was-> is ( cấu trúc  it is a long time)

2.he usually comes home at 5 o'clock, but this week he works very late

Lỗi: works

Sửa: works-> worked

3.your window need to clean immediately. they are very dirty

Lỗi: need

Sửa: needs