They do not _on the book or the teacher.
A. later
B. depend
C. focus
D. shown
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She once tried _learn french.
A. in
B. for
C. on
D. at
_is a pleasure for us to attend the olympic.
A. it
B. that
C. this
D. what
This book is so _ that I cant't even remember it .
A. obscure
B. clear
C. hard
D. important
The proposal was accept with _ approval.
A. unanimous
B. decision
C. opinion
D. yiven