The day breaks，______ the birds are singing.
#79693
A
because
B
as
C
since
D
for
推荐题目
The first decade in the 21st century is the one ______ many significant advances are made in China.
#33572
A
that
B
in which
C
which
D
where
_______ didn't attend the lecture yesterday won't be given full marks.
#30310
A
Any one
B
Whoever
C
Who
D
The person
Here is a survey about hopes and dreams ______ thousands of students took part.
#30957
A
at which
B
in which
C
with which
D
about which