It was very hot today for the first time in a while, but I went for a walk this evening. It was very hot today for the first time in a while, but I went for a walk this evening.

This sentence is good, but it might be more natural to say: "Even though it was very hot today for the first time in a while, I went for a walk this evening."

It was very hot today for the first time in a while, butso I went for a walk this evening. It was very hot today for the first time in a while, so I went for a walk this evening.

While I was walking, a taxi was passing bypassed me. While I was walking, a taxi passed me.

While I was walking, a taxi wasthat had a decal that had written "I was vaccinated twice" on it passinged by me. While I was walking, a taxi that had a decal that had written "I was vaccinated twice" on it passed by me.

The taxi said,had "I was vaccinated twice." written on the side. The taxi had "I was vaccinated twice" written on the side.

The taxi driver said, "I washave been vaccinated twice." The taxi driver said, "I have been vaccinated twice."