Today's lowest temperature was two degrees in Shanghai. Today's lowest temperature was two degrees in Shanghai.

Today's lowest temperature was two degrees in Shanghai. Today's lowest temperature was two degrees in Shanghai.

Or 2⁰

Today's lowest temperature was two2°C in Shanghai. Today's lowest temperature was 2°C in Shanghai.

Today's lowest temperature was two degrees (or 2C or 2°) in Shanghai. Today's lowest temperature was two degrees (or 2C or 2°) in Shanghai.

Today's lowest temperature was two2 degrees Celsius in Shanghai. Today's lowest temperature was 2 degrees Celsius in Shanghai.

I felt a little bit cold this afternoon., even though the office was quite warm. I felt a little bit cold this afternoon, even though the office was quite warm.

I felt a little bit cold this afternoon., I felt a little bit cold this afternoon,

I felt a little bit cold this afternoon, even though the office was quite warm. I felt a little bit cold this afternoon, even though the office was quite warm.

Even though the office was quite warm.

Merge this incomplete sentence with the previous one.

Eeven though the office was quite warm. even though the office was quite warm.

"Even though" gets used in one of two ways: "Even through X, Y" "Y, even though X" In both cases, Y is an unlikely consequence of X, or something that happened despite X. You've used in the second form, but then it needs to be in the middle of a sentence, rather than the start of one, so I combined this sentence with the previous

Even though the office was quite warm.

I hope I am nodon't getting the flu again. I hope I don't get the flu again.