She spent as much time as she could _____ over her lessons. 
#94759
A
go
B
to go
C
going
D
went
推荐题目
Not until I began to work ____ how much time I had wasted.
#93171
A
didn’t I realize
B
did I realize
C
I didn’t realize
D
I realized
Mike has much difficulty ________ Chinese so he often asks me ________ help.
#92686
A
to understand, with
B
understanding, of
C
to understand, for
D
understanding, for