The boy dived into the water and after ___ seemed to be a long time, he came up again.
| A．what | B．that | C．it | D．which |
They have no idea at all ______.
| A．where he has gone | B．where did he go |
| C．which place has he gone | D．where has he gone |
Even though the Smiths have moved to a faraway place, we still see them ___.
| A．from time to time | B．at a time |
| C．at the same time | D．all the time |
He was ______ to find that it was almost impossible to undertake the task.
| A．cast off | B．cast out | C．cast away | D．cast down |
I took a risk to carry out the project, but it ____ in the end.
| A．paid up | B．paid out | C．paid off | D．paid back |
The boys marked ____ a football court on the playground.
| A．out | B．up | C．down | D．with |