Question

みい

下線部を適切な形に直しなさい。1番以外分かりません。後ろにyesterdayがついているから過去形など、詳しい説明をお願いします。

Ken and Misa Dare at the city library yesterday. They want to find some books for
their homework. They always like to work there. After a while, they find a book about a
history of vegetables. They read the book and write a report about it.
When they have finished work in the library, they go to Midori sport shop to buy a
tennis racket. They are both in the school tennis team, but Ken @break his racket last
week while he was play against Oshima junior high school team. At the shop, he ®finds a
nice racket which was only 3000 yen and he buys it.
Then, they take a train and go home.