.--How much did you ________for the pen? --Five yuan.
| A．cost | B．take | C．pay | D．buy |
A serious study of physics is impossible ________ some knowledge of mathematics.
| A．against | B．before |
| C．beyond | D．without |
________ a lady of her necklace, the young man was arrested on the spot by a policeman.
| A．Having caught robbing | B．Caught robbing |
| C．Being caught robbing | D．Catch robbing |
The building project ________ next year is not easy ________ in time.
| A．being carried out; to complete |
| B．carried out; to be completed |
| C．to be carried out; to complete |
| D．to be carried out; to be completed |
It's no good ________ here this morning. Come again on Monday.
| A．wait | B．waiting |
| C．having waited | D．to be waiting |
All the books ________ by the students are reported to have been sent to the children in the countryside the other day.
| A．having offered | B．to be offered |
| C．offering | D．offered |