— No, I have made a decision _________ over lessons this weekend.
A:to get; to go
B:getting; going
C:getting; to go
D:to get; going
氧气是空气的主要成分之一,下列有关氧气的说法正确的是( )
—No, I have to have a part-time job to _________my school expenses.
下列有关生物实验的叙述正确的是( )