Ever since she was a little girl, she ______ interested in music.
A. is
B. has been
C. was
D. had been
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In the advanced reading course students must take tests at monthly ______.
A. distance
B. length
C. periods
D. intervals
Most of Americans get so used ______ TV. so dependent on its flickering (闪动的) pictures, that it begins to dominate their lives.
A. to watch
B. in watching
C. to watching
D. with watching
The truth is that it is only by studying history ______ we learn what to anticipate(期待) in the future.
A. and then
B. so
C. by which
D. that
The professor found no student in the lecture hall when he arrived. Only then did he realize that he came ______ early.
A. too much
B. so much
C. much too
D. much so