______ him well, I would have invited him to my birthday party.
| A．Had I known | B．Should I know |
| C．If I know | D．If I knew |
—What’s the time，please?
— It’s _________.
| A．half past nine | B．half to nine |
| C．nine half | D．half nine |
The old building was founded_________ .
| A．in 1820s | B．in the 1820 |
| C．in the1820s’ | D．in the 1820s |
There are 2000 boys in this school，and _________them like playing football.
| A．five hundred | B．five hundreds |
| C．five hundreds of | D．five hundred of |
About _________men and women are in the square.
| A．two thousand | B．two thousand of |
| C．two thousands | D．thousand of |
________ people were hurt in the accident.
| A．Hundred of | B．Hundred |
| C．Hundreds | D．Thousands of |