First, article, the, seemed, difficult, the ,At ,student, to,
very

Надо расставить слова по порядку? В таком случае: At first, the article seemed very difficult for the student.

1) he may not read this book. 2) mary might forget to call you. 3) they could go to the fitness centre.

1-a

2-a

3-c

4-b

5-a