__________ has helped to save the drowning girl is worth praising.
| A．Who | B．The one | C．Anyone | D．Whoever |
The man insisted __________ a taxi for me even though I told him I lived nearby.
| A．find | B．to find |
| C．on finding | D．in finding |
Isn't it time you got down to __________ the papers?
| A．mark | B．be marked |
| C．being marked | D．marking |
In some parts of London, missing a bus means __________ for another hour.
| A．waiting | B．to wait |
| C．wait | D．to be waiting |
You can't imagine what great trouble they have __________ the problem __________.
| A．to solve; being talked about | B．solving; discussing |
| C．to solve; to talk about | D．solving; being discussed |
The boy was criticized for forgetting __________ his textbooks to school.
| A．bringing | B．to bring |
| C．having brought | D．to have brought |