The output of our factory is now twice ________ it was three years ago.
A)
what
B)
that
C)
as
D)
which
出自：华北水利水电大学-水利水电建筑工程-大学英语2
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The output of our factory is now twice ________ it was three years ago.
A)
what
B)
that
C)
as
D)
which
出自：华北水利水电大学-水利水电建筑工程-大学英语2