It was when searching for the lost book whose cover was missing ______ a secret letter addressed to his mother.
#85170
A
what he found
B
until he found
C
that he found
D
he had found
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-- I didn't realize how popular the restaurant was until I made a reservation the other day.-- I beg your pardon, but when __________?
#84904
A
was you realized it
B
it was that you realized it
C
you realized it
D
was it that you realized it
___ he will leave for Beijng.
#85505
A
It will not be long before
B
It is before long that
C
It is before long
D
It was before long that
Can _____ be in the desk _____ you have put my letter？
#85406
A
it；which
B
I；Where
C
you；in which
D
it；that
Do you know since when it is ________ you have been interested in poetry?
#85312
A
when
B
until
C
how
D
that