Mother was busy washing dishes ________________ Father was watching TV．
#30098
A
until
B
if
C
since
D
while
推荐题目
I’ll finish the job ____ I come across great difficulty.
#31563
A
however
B
even though
C
no matter
D
as though
_______ he lives in a rich family, he started from the lowest position as an ordinary worker to make his living.
#31641
A
While
B
Unless
C
As
D
Since
_A container weighs more after air is put in, ____proves that air has weight.
#80057
A
as
B
it
C
that
D
which
We should consider the students’ request _____ the school library provide more books on popular science．
#34411
A
that
B
when
C
which
D
where