Old people must __________.
#44763
A
speak to polite
B
be spoken politely
C
be spoken to politely
D
be spoken to polite
推荐题目
We ______ to close the windows before we left the lab.
#45022
A
tell
B
told
C
are told
D
were told
The words that we should pay attention to ________on the blackboard.
#44787
A
being written
B
are written
C
is writing
D
writing
---Where’s your mother?   ---Oh, she ______ Shanghai on business. 
#44748
A
have been to
B
have gone to
C
has been to
D
has gone to
Bikes ______ in the 1880s and they ______ traveling around.
#45063
A
were invented; were used as
B
were invented; are used for
C
was invented; was used for
D
invented; are used to