There are 30 classrooms ____________ our school. Mine is _____________ the second floor.
| A．on; in | B．in; in |
| C．in; on | D．on; on |
—Did you see Mr Smith when you were in France?
—No．When I________France，he________to China．
| A．had arrived in；had gone |
| B．arrived in；has been |
| C．got to；had gone |
| D．had got to；had been |
He told us that he________the letters in the morning．
| A．will post |
| B．have posted |
| C．was posting |
| D．had posted |
By nine o’clock yesterday evening，we________our work．
| A．have finished |
| B．finished |
| C．had finished |
| D．finish |
We________four thousand new words by the end of last year．
| A．learned |
| B．had learned |
| C．have learned |
| D．will learn |
—Did you meet Tom at the airport?
—No．His plane________by the time I________there．
| A．has taken off；got |
| B．took off；had got |
| C．took off；arrived |
| D．had taken off；arrived |