Did she work on a project on Monday?
No, she didn't. She talked on the phone.
What did she do last weekend?
She practiced the piano.
What is she doing?
She's practicing the piano.
What did he do last weekend?
He worked on a project.
Did he practice the piano on Thursday?
Yes, he did.
What's he doing?
He's working on a project.
What did she do last weekend?
She visited a friend.
Which two days are at the weekend?
Saturday and Sunday
What's she doing?
She's talking on the phone.
What are they doing?
They're helping their parents.
Did he help his parents on Tuesday?
Yes, he did.
What did he do last weekend?
He helped his parents.
Did he practice the piano on Friday?
No, he didn't. He worked on a project.
What is he doing?
He's using the computer.
What is she doing?
She's visiting a friend.
Did she visit her friend on Wednesday?
No, she didn't. She used the computer.