一How did you manage to succeed?
一It is only after we've lost everything __________we're free to do anything.
| A．when | B．that | C．which | D．what |
The visiting professor offered us some advice, of great help to our English learning.
| A．I think it is | B．I think which is |
| C．which I think is | D．which I think it is |
He gave a lot of presents to his friends, but never one to me.
| A．has he given | B．he has given |
| C．does he give | D．he gives |
In spite of his own safety, the boy, , jumped into the river to save the girl in the water.
| A．risked to be drowned | B．risked drowning |
| C．risking to be drowned | D．risking drowning |
She married an Australian man and became a (n) citizen of that country.
| A．automatic | B．permanent | C．contemporary | D．religious |
his homework, Little Tom has to stay in his room for another hour.
| A．Not finishing | B．Not having finished |
| C．Not finished | D．Having not finished |