1 . “How do you do?” he said, bowing s__________ (稍微) to the whole classmates. （根据中英文提示拼写单词）

2 . A sleep study published in the journal Sleep Health suggests that those who walk ________ more will experience better quality and duration of sleep.

A．barely

B．incredibly

C．slightly

D．ultimately

3 . It is said that every Monday many hospitals are s_________ busier than normal. （根据首字母单词拼写）