问题
选择题
She spent as much time as she could _____ over her lessons.
A．go
B．to go
C．going
D．went
答案
答案：C
句子的主干是spend time（in） doing sth. .
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She spent as much time as she could _____ over her lessons.
A．go
B．to go
C．going
D．went
答案：C
句子的主干是spend time（in） doing sth. .