What the science teacher does and says ____ of great importance to college students. 
#85989
A
was
B
are
C
is
D
were
推荐题目
 Your brother ______you is very kind to me.
#85534
A
and
B
or
C
as well as
D
as well
The pair of shoes  __________ worn out.
#86117
A
was
B
were
C
havebeen
D
hadbeen
 "All____present and all ____ going on well."our monitor said. 
#86206
A
is; is
B
are; are
C
are; is
D
is; are