选出恰当的应答语（  ）

—I've got a headache.

—No wonder.You     in front of the computer too long.

根据汉语提示完成下列句子，每空一词。
____ Do you often do                       (户外活动) after school
____ There is                          (一些有趣的事情) in my class.
____ Thank you for their                         .（辛勤工作）
____ Please                      ( 穿上 ) your coat. It's cold outside .
____ Lucy is a good girl and she always returns the books to the library                  (准时)。