I would appreciate it ________ you call back this afternoon for the doctor's appointment.
#67449
A
until
B
if
C
when
D
that
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I don't know when______. When he ______,I'll call you.
#41268
A
will he come; will come
B
does he come; comes
C
he comes; will come
D
he will come; comes
The engineers made two big plans for the dam, ____ was never put in force. 
#73414
A
one of them
B
which
C
one of which
D
every one of which