问题补充：
As senior three students, it is important to a good state of mind.
A. keep up
B. carry out
C. get in
D. take off
答案：
(答案→)A. keep up
B. carry out
C. get in
D. take off
解析：考查动词短语：A. keep up维持，不低落，B. carry out实施，C. get in收获，D. take off起飞，脱下，句意：做为高三的学生，保持好的精神状态很重要。选A。
