1. In summer, it is
hot
(hot/warm) in Nanjing.
2. It's cool in Shanghai in
autumn
(summer/autumn).
3. —How's the weather today? —It's
sunny
(sun/sunny).
4. In Nanjing, the days are short in
winter
(summer/winter).
5.
It's
(It's/They're) cold and snowy in Beijing today.
6. The temperature is -22℃. It's very
cold
(hot/cold).
答案：1. hot 2. autumn
3. sunny 4. winter 5. It's
6. cold
