Put the verbs in brackets in the right tense form. use the present simple or the present progressive they (pley) football every day after school. now thry (not play they (prepare) the ground for the game.they girls (help). the parents (watch). he (run) after the ball. he (jump). he (kick) the ball. the ball (fly) into the gate goal! oleg's mother (see) this vanya (sit) on the grass. he always(play) football matches, but today he (not play).

They play football every day after school. now they are not playing. they are preparing the ground for the game.the girls are helping. the parents are watching. he is running after the ball. he is  jumping. he kicks the ball. the ball is flying into the gate goal! oleg's mother sees this. vanya is sitting on the grass. he always plays football matches, but today he is not playing.

I was ill last week – Я болел на неделе.
Mary and I were at the concert last night – Мэри и я были на концерте вечером.
We tried to contact their office yesterday, but the line was busy – Мы пробовали связаться с их офисом вчера, но линия была занята.
They were so happy to see me – Они были так счастливы видеть меня.
The letter was on the table. Did you find it? – Письмо было на столе. Ты нашел его?
The Smiths were on holiday in Brazil last month – В месяце Смиты были в отпуске в Бразилии.
I passed the exam. It was not difficult – Я сдал экзамен. Он не был сложным.
When I came back home last night, the cat was not there – Когда я вернулся домой вечером, кота там не было.
I heard their conversation. She was not right – Я слышал их разговор. Она была не права.
I liked those candies. They were not too sweet – Мне понравились те конфеты. Они не были слишком сладкими.
His parents were not doctors, they were teachers – Его родители не были докторами, они были учителями.
Last time I saw them, they were not married – Последний раз, когда я их видел, они не были женаты.

Well, for me it's quite good practice (buy nothing day). Cause nowadays everyone can see plenty of everything. People buy some goods and items spending much money. I guess, most of often we buy unnecessary things.

As for pro and contra: (advantages)

Firstly, you don't have to spend money. There will be more important situation, when you can do it.

Secondly, you can use your time to develop yourself. Learn English, do sport or travel instead of buying doubtful thing.

As for disadvantages, I hardly ever can say anything about it, cause I ve got everything in today's abundance.

As for disadvantage..

Well, I 'm so used to gettig, having, buying everything daily . So , I almost haven't got "buy nothing days" in my life, this in its turn is my disadvantage.