Change the sentences into negative(Simple Past)

Difficulty:
Easy
Exercise type:Free Form

She (study) for the test.

He (call) me yesterday.

We (leave) early.

They (go) to the concert.

I (receive) your email.

She (enjoy) the book.

He (arrive) on time.

We (finish) the project.

They (win) the game.

I (know) the answer.