Помогите пож с заданием

Open the brackets to complete the text.
A present from Chicago.
That year the winter in Chicago (to be) very bad. One morning, when railway workers (to come) to the station, they (to see) a lot of snow that (to fall) the night before. The workers (not to know) what to do with it. They (not to see) so much snow. They (can) not leave the snow on the platforms because it (to be) dangerous for passengers.Suddenly one of the workers (to have) a wonderful idea. The workers (to put) the snow on the freight train and (to send) it south to Texas. The workers (to think) that the snow (to melt) away on the way.The next day five tons of snow (to arrive) in Oklahoma City. The railway workers in Oklahoma City (to be) very happy when they (to see) what Chicago workers (to send) them. "It's a wonderful present," they said and (to put) the snow on the children's playground. Some of the children in Oklahoma City never (to see) snow before!

1) I went into the church with a lot of other little girls and sat in the corner.
2) Every Sunday he went to church.
Задание: Нужно объяснить написание артикля the перед словом church. Почему в первом случае артикль есть, а во втором нет? Помогите пожалуйста, заранее благодарна.

Put the verbs in brakcets in the correct from(past simpl or past continuous tense)(задание)
1.When I came home my mom ... diner for us.(to cook)
2."What ... you ... about?"(to talk)-"Nothing serious."
3.I am sorry I could not join you yesterday.I ... for my exam.(to prepare)
4.Whot ... you ... at a minute ago?-It was the funniest ioke I've ever heard.
5.The spaceship captain ... the satellit which ... very fast.(to notice/to move) It was dangerious!

показано в образце.ПОМОГИТЕ ПОЖАЛУЙСТА ОЧЕНЬ НАДО!

Задание:
нужно составить диалог с напарником..
(диалог должен быть такой...)
А- Скажите другу, что у него очень большой словарный запас.
В- Поблагодарите за комплимент .
А-Раскажите о своей проблеме с английским языком. Вы всё время забываете новые слова
В- Посоветуйте другу купить хороший словарь, чтобы проверять по нему значение новых слов, выписывать их в тетрадь и составлять предложения с новыми словами.
А- Поблагодарите друга за совет.