---_________ the door, please.
---Please come in. The door________.
| A．Be open; opens | B．Be open; is opening |
| C．Open; is opening | D．Open; is open |
Beijing is one of the ______ in the world today．（ ）
| A． |
busiest city |
B． |
busiest cities |
| C． |
busy city |
D． |
busy cities |
________ used to ________ a post office near my house．（ ）
| A． |
There； be |
B． |
There； have |
| C． |
It； be |
D． |
There； having |
She thinks the best way ________ English is ________ English magazines．（ ）
| A． |
to learn，read |
B． |
to learn，by reading |
| C． |
learn，reading |
D． |
learning，read |
The boy likes music that he can dance ________．（ ）
| A． |
with |
B． |
from |
C． |
to |
D． |
on |
My little brother is very ，so he often makes mistakes．（ ）
A．carefulB．carelessC．care