—What's wrong with you,Eric? You look tired.
—I to prepare for the final exam last night.
A:picked up
B:woke up
C:put up
D:stayed up
写出下列词语的近义词。
巩固____ 突破____ 顽强____ 歼灭____
13-7=( )
下列各句中划线词语使用正确的一项是( )