Please correct the following sentences

The museum opens at nine and closes at six.
I don't agree at what she said.

Please correct the following sentences

The museum opens at nine and closes at six.
I don't agree with what she said.

Yuki, you made some few mistakes in your sentence.

This is the correction.

The museum is open from nine to six.
I don't agree with what she said.

You are on the right way to make good sentences in English.

What you need to focus on is your grammar and spelling.

if you have some more problems with English, feel free to ask.

Please correct the following sentences

The museam opens from nine and closes to six. --> The museum opens at nine and closes at six.
I don't agree to what she said. --> I don't agree with what she said.