There are ___ floors in the building and my home is on the ___ floor.
| A．twenty； fifteenth | B．twenty； fifteen |
| C．twentieth； fifteen | D．twentieth； fifteenth |
—________？
—She has a sore back．
| A．What is she |
| B．What does she look like |
| C．What’s the matter with her |
| D．What does she do |
They study so________that they easily pass the exam．
| A．hard |
| B．harder |
| C．hardly |
| D．hardest |
She realized________English well．
| A．the importance of learn |
| B．the important of learn |
| C．the importance of learning |
| D．the important of learning |
He seems________out of trouble．
| A．to get |
| B．getting |
| C．get |
| D．to getting |
He used wood________a fire．
| A．to make |
| B．making |
| C．make |
| D．to making |