Переведите,только не по переводчику. i (not to see) this american singer on stage before. his boss to speak with him tomorrow at 1: 00 p. when i (to come) home,mother already (to cook) dinner. tommorow at this time, i (to attend) a conference. kate (give) me the book,that she (to buy) the day before. when you arrive, i (to wait) at the station. he (to open) his eyes,(to look) around and (to try) to remember what (to happen) to him.

Тут надо подставить правильные слова, поэтому подставила и перевела с ними: я никогда не видел этого американского певца на сцене раньше. его босс будет говорить с ним завтра в час дня. когда я пришел домой, мама уже приготовила ужин. завтра в это время я посещал/посещу (в зависимости от времени) конференцию. кейт дала мне книгу, которую она купила днем назад. когда ты прибыл, я ждал на станции. он открыл глаза, посмотрел вокруг и попробовал вспомнить, что случилось с ним. а вот как это будет звучать на : i didn't see this american singer on stage before. his boss will speak with him tomorrow at the 1: 00 p.m. when i came to the home, my  mother already cooked a dinner.  tomorrow at this time i attended/will attend (в зависимости от времени) a conference. kate gave me the book, that she bought the day before. when you arrive, i waited at the station. he opened his eyes, looked around and tried to remember what happened to him.

1. is football being played since 1856? 2. was your car repaired yesterday? 3. are flowers usually sold in small shops? 4. will this topic be discussed at the next lesson? 5. my coat was cleaned yesterday.