Q:

How did you know that

Mari was excited about the party?

A:

From the text,

Mari Kept asking her grandmother what time is it,

so she was excited about the party.

Q:

Why did Mr. Evans think

that it was a great day for a party?

A:

From the text:' it was a sunny afternoon',

we know the weather was nice

so Mr. Even think that it was a great day for a party.

Q:

Why did Mari think that Mrs. Perez was home

even though no one answers the door.

A:

Mari think that Mrs. Perez was home  even though no one answer the door, because she heard a soft moaning sound from inside Mr. Perez's apartment.

Q:

How did Mrs. Perez hurt her leg?

A:

From the text, Next to her lay a ladder and a framed picture,

we know she fell off a ladder while trying to hang a picture.