Listen carefully in class,     you’ll not understand what to do. 
#57742
A
and
B
but
C
or
D
because
推荐题目
 I will wait here ____ the concert is over.
#58456
A
by
B
when
C
until
D
as
Do you have _____ brothers ______ sisters? 
#58426
A
some , or
B
any , or
C
any , and
D
some , and