good manners to say “Sorry” when you knock into someone but    no need to say it again and again .
#92894
A
There are ; there is
B
It is ; there is
C
There is ; it is
D
It is ; it is
推荐题目
________five minutes________ before the last train left, we arrived at the station. 
#93115
A
There being; to go
B
It was; left
C
It had; left
D
There was; to go
Once you do it,      you will feel that it comes easy.
#92126
A
by and by
B
feet of clay
C
kill the fatted calf
D
garbage in, garbage out
Air is to us _____ water is to fish.
#92589
A
what
B
that
C
which
D
is that
There is no doubt ______ he did is good for us.
#92726
A
that what
B
what that
C
that
D
what