We cannot figure out ________ quite a number of insects, birds, and animals are dying out.
#73021
A
that
B
as
C
why
D
When
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makes this shop different is that it offers more personal services.
#73883
A
What
B
Who
C
Whatever
D
Whoever
As a teacher, I seldom give my students so difficult a problem_______ they can’t work out.
#67233
A
that
B
as
C
if
D
in order that
Ａlot of language learning, has been discovered, is happening in the first year of life, so parents should talk much to their children during that period.
#66903
A
as
B
it
C
which
D
this
The number of the students in senior high school, ____ is mentioned above, is increasing.
#66576
A
as
B
which
C
what
D
who