There _______ a pen and some pencils on the desk.
#44043
A
are
B
is
C
have
D
has
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This is one of the happiest days ____ spent in my life.
#85594
A
that have ever been
B
that has never been
C
which was ever
D
that had been
Mary is the only one of the teachers who ________ a little Chinese because she is one of my friends who ________ been to China.
#85562
A
know；have
B
knows；has
C
knows；have
D
know；has