He was working quietly, with all his attention _______ on the task.
| A．was fastened | B．fastening | C．to fasten | D．fastened |
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 |
The cotton production has increased by_________percent this year compared with last year.
| A．five point six eight | B．five point sixty-eight |
| C．fifth point and six eight | D．five point and six eight |
This is a _________building，which is about_________high.
| A．six-storey;38 metre | B．six-storeys;38-metre |
| C．six-storeyed;38 metres | D．six-storey;38-metres |
David helps his mother with the housework every Saturday for abou_________t.
| A．one and half hours | B．a half and an hour |
| C．an hour and half | D．one and a half hours |