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
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The reason ______she didn’t come to school was_____she had to look after her sick mother.
#70246
A
because ; why
B
that ; because
C
why ; that
D
which ;that
We haven’t settled the problem of_______it is necessary for him to study abroad.
#73977
A
that
B
whether
C
what
D
if
The notice has been told everyone _______ a party will be held in the open air tomorrow.
#71676
A
whether
B
when
C
where
D
that