To be _____debt is to be ____danger.
| A．in ,on | B．on , in | C．in , in | D．of , at |
At 13，Samuel received a training course in drawing for three years，________ he got a good opportunity for further development.
| A．after that | B．after which |
| C．after it | D．after this |
Her sister has become a lawyer，________ she wanted to be.
| A．who | B．that |
| C．what | D．which |
Let’s talk about the persons and the things ________ we can remember.
| A．which | B．whom |
| C．that | D．what |
So far all cloned animals have suffered from some different serious disorders，________ dying soon after birth.
| A．many of which | B．many of whom |
| C．many of them | D．many of that |
The students ________ are expected to pass.
| A．were taught by Professor Deacon |
| B．whom were taught by Professor Deacon |
| C．when were taught by Professor Deacon |
| D．Professor Deacon taught |