Choose the correct answer for each sentence.
On a sunny day, most people feel ( ______ ) because warm, sunny weather ( ______ ).
On a hot day we think more ( ______ ), so it is ( ______ ) to think clearly.
On rainy days, some people are ( ______ ) energetic, so they ( ______ ).
On cloudy or rainy days, the amount of serotonin in our body ( ______ ). This can make us feel ( ______ ). 空1选项：1、happy2、lazy空2选项：1、relaxes us2、makes us less energetic空3选项：1、quickly2、slowly空4选项：1、easier2、harder空5选项：1、more2、less空6选项：1、work better2、feel more lazy空7选项：1、increases2、decreases 空8选项：1、tired or blue2、happier and more energetic