X .

1) School year in Viet Nam begins in September.

2) Elementary school day lasts from 7:30 Am to 1:00 PM

3)  The children often wear uniform and sit in the benches behind the wooden desk and small porcelain inkpot of the corner

4)School girls often wear white dress and school boys wear white shirt with a red kerchief

5) Windows in rural schools often have no panes

XI 

1) It's comfort ⇒ It's so comfortable

2) They ⇒ This

3) is ⇒ are

4) is ⇒ are

5) helps ⇒ help

X.

1.The school year usually begins in September

2.Elemnlary school day lasts from 7 : 30 am to 1 : 00 pm

3.The children often wear uniform and sit in the benches  behind the wooden desk and small porcelain inkpot of the cornec

4.Schoolgirls  often wear white dress and boys wear white shirt with a read kerchif

5.Window in rural school often have no panel

XI.

1.comfort → comfortable

2.is → are

3.is → are

4.fastly → fast

5.helps → help