While previewing his lessons, the little boy will make a question mark ________ there is a question.
#67602
A
where
B
when
C
because
D
which
推荐题目
Last term our maths teacher set so difficult an examination problem _____ none of us worked out.
#73260
A
that
B
as
C
so that
D
which
This summer I visited the farm set up by my uncle,_______he raised fifty_______.
#73661
A
there; cattle
B
where; head of cattle
C
in which; head of cattles
D
where; cattle
My sister isn’t in. ________ she comes back, I’ll let her call you back.
#41346
A
While
B
Until
C
Before
D
When
He likes to use words _________ is clear to her.
#73406
A
of which the meaning
B
of which meaning
C
of whose meaning
D
meaning of which