Most birds find it safe to sleep in the trees, but ____ they have eggs or young chicks, they don’t use a nest.
#79977
A
why
B
how
C
unless
D
where
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Once there was ______time _____people walked without shoes.
#33996
A
a ;that
B
a ;when
C
the ;that
D
the ;that
Jerry was very excited to see the playground ________ she used to play football ________ with lots of snow.
#34503
A
where; covered
B
which; covered
C
/; covering
D
where; covering
Bill shows no interest in painting, there’s no sense in inviting him to the art show.
#31313
A
As if
B
Now that
C
Even if
D
So long as
_______ you don’t have much experience in this field, why don’t you ask Professor Wang for advice?
#31166
A
Unless
B
In case
C
Even if
D
Now that