It's really getting cold.

Fill in the blanks with the right words: Yesterday's weather forecast said that there was a strong cold air going south. This morning, the temperature (

expected

) come down. I shivered on my way to school.

suddenly

) I saw a red light flash before my eyes. Wow, a middle-aged man (

accidentally

) running in a red short-sleeved shirt, a feeling of admiration (

spontaneously

) was born. I can't help cheering up and striding towards school.